Writing home turned out to be harder than crossing the barrier.
That was not what Severus would have predicted.
He had expected the letter to be simple in all the ways that mattered: paper, ink, report, facts. Hogwarts had books, lessons, staircases, dungeons, food that appeared in impossible quantities, a lake outside some windows and against others, ghosts who drifted through walls as if masonry were only a strong opinion, and a subject called Potions that felt less like school than recognition. One should be able, he thought, to write such things down and send them.
The difficulty began the moment he sat with parchment before him and realized that nothing in Hogwarts remained impossible at the same pitch it had held from Spinner's End.
That was the problem.
The world had not become ordinary. It had become usable.
He sat in the Slytherin common room on a Sunday afternoon with his writing things laid out before him and the first proper cold of late October pressing at the lake windows. Beyond the glass, the water moved green-black and slow, occasionally brightening when some pale shape turned far below. The common room held its usual watchful quiet. Older students read, argued low over homework, or played some elaborate card game with expressions far more serious than the game warranted. The fire burned well enough to look expensive and not quite well enough to warm the corners.
Severus had chosen the table nearest the lamp.
His parchment remained blank.
Across from him lay the school's first practical proof that home expected contact: a note posted on the Slytherin notice board three days earlier reminding first years that families generally appreciated letters and that owls would depart on Wednesday morning. The wording had annoyed him. Generally appreciated sounded like one of those adult formulations designed to hide need inside etiquette. Still. He had looked at the notice longer than necessary.
Now the blank page offended him.
How does one explain a world that was still impossible in memory and yet increasingly ordinary in use?
He dipped the quill. Wrote:
Dear Mum,
Then stopped.
Mum looked both too childish and too bare on the parchment. Yet Mother would have been false, a schoolboy affectation borrowed from families who had always used the word without tasting distance in it. He kept Mum because correction would make the whole attempt worse.
The next line refused him.
He could write: I arrived safely.
That was true and trivial.
He could write: Hogwarts is very large.
That was true and insufficient.
He could write: My classes are going well.
Also true. Also nearly meaningless.
The common room fire shifted.
Two older girls on the sofa by the far wall were comparing notes on Charms homework and speaking of Flitwick as if one might love and resent a professor in equal measure without contradiction. Regulus Black sat in the high-backed chair nearest the window with a volume of family law open on one knee and every sign of having been born knowing how to occupy silence in public. Mulciber's relation, whatever exact relation he was, had somehow acquired a chess set and a sneer in the space of a week and a half and now wore both as if the house itself had granted them.
The hidden world went on around him in its own practical weather.
That was exactly the issue.
He thought of his mother in the kitchen at Spinner's End. The kettle. The weak tea. The new window pane clouding at the corners. The words before I left home. The dark box under the bed. Her face when the letter arrived. Her sentence at King's Cross: You know enough.
Enough for what? he had thought then. Not enough for writing, apparently.
The page remained white below Dear Mum.
Lily appeared without warning.
This still happened despite houses. Not at doors or breakfast tables or staircase landings with the old easy frequency of Spinner's End, but enough. In corridors. Library corners. Shared lessons. Sometimes, if the common room door had just admitted a message or a prefect allowed some errand in the name of school efficiency, at the edges of house territory where rules weakened under usefulness.
Now she stood in the common room arch with a folded book under one arm and a note in the other hand, looking entirely like someone who had walked into the wrong kingdom by accident and decided not to apologize for it.
Severus looked up.
Lily spotted him at once and came over.
"You're writing home."
It was not a question.
"No."
She looked at the blank parchment. Then at the Dear Mum. Then back to him with enough amusement to be dangerous.
"That's very convincing."
He put one hand over the page though she had already seen all of it worth seeing.
"What do you want?"
"Professor Slughorn's note. He left it in the wrong classroom." She held it up and then, because the note was not the real reason she had stopped once she saw him, tilted her head at the parchment. "Is it difficult?"
Severus stared at her.
"What?"
"The letter."
"It's only writing."
Lily considered this. "That means yes."
He disliked that she was correct.
She sat down on the bench opposite without asking. Again. Some castle rules could delay Lily. Very few prevented her if she had already chosen the line she meant to cross.
"I wrote mine yesterday," she said.
He looked at her.
"What did you say?"
Lily thought about that with visible seriousness. "That the ceiling in the Great Hall is not a ceiling properly. That a hat shouted at me. That the food appears and disappears like it has better manners than most of the people. That I don't think staircase logic here is fit for Christian use. And that I'm happy."
Severus looked back at the blank parchment.
That last part he could not imagine writing.
Not because it would be false exactly. Because it would be too simple, and simplicity of that kind had always felt like exposure in his house.
Lily, sensing the line of his thought without knowing it fully, said more softly, "You don't have to explain all of it."
He almost laughed.
"That's the whole point of a letter."
"No, it isn't."
"What is then?"
"Telling someone where you are."
The sentence went through him more deeply than it had any right to.
Telling someone where you are.
Not only in geography. In life perhaps. In the shape of a world newly entered.
He looked at her.
Lily shrugged one shoulder. "You can tell the bits you can carry."
She left after that because the note in her hand really did need delivering and because one of the older Slytherin prefects had begun giving her the sort of look that treated house boundaries as sacred until she violated them, at which point they became administrative. Before going, she tapped the page once with one finger.
"Start with Potions."
Then she was gone.
Severus looked at the parchment.
Start with Potions.
He dipped the quill again.
This time he wrote:
Hogwarts is larger than I thought it would be. The ceilings are high and the halls are colder in some places than others. Slytherin is under the lake, which is as strange as it sounds. The windows in the common room look into the water.
He stopped.
Read the lines back.
They were not elegant. They were, however, true. He had begun with place. Not explanation. Good.
He continued.
My lessons are all right. Potions is the best so far. Slughorn says ingredients do not like being treated as if they are all the same, which is sensible. We made a wound-cleaning solution in the first lesson. Mine came out correctly.
There.
A fact. A report. Also, hidden in the bareness of the sentence, more pride than he had ever yet written to anyone.
He stared at Mine came out correctly and nearly crossed it out for sounding pleased. Then thought of his mother reading it in the kitchen light and knowing exactly what such a sentence cost him to put down.
He left it.
The common room quieted further as afternoon shifted toward evening. One of the older students called for fresh firewood and then remembered they were at Hogwarts and corrected himself with a muttered charm instead. The wood box near the hearth answered at once by floating two logs across the room. No one looked twice.
That, too, belonged in a letter and did not.
He wrote instead:
Herbology is useful. There are greenhouses. We have not yet done much with dangerous plants, though I expect we will. Charms is less straightforward than it sounds, because saying things properly appears to matter more than one might like. History of Magic would be better if the professor were alive.
The quill paused.
He read that back and allowed himself the smallest satisfaction. That line his mother would appreciate. Or at least recognize.
The difficulty returned in the gaps between facts.
How to explain the Great Hall's enchanted ceiling, the first night under the lake, the way the castle felt less like building than society, the hat's voice in his head, the almost painful rightness of Potions, the difference between Lily in Gryffindor light and himself in Slytherin green? None of these would sit properly on parchment without becoming theatrical or thin.
He tried another route.
The school is busier than I expected. Everyone already seems to know things about everyone else, or about their families, and some of the older students act as if all this is ordinary, which I suppose to them it is.
That felt closer.
He added:
I am getting used to it.
A lie and not a lie.
He left that too.
He thought of the train. Regulus and family books. Mulciber and house certainty. The older boys in the corridor. The way society had begun speaking before lessons did. His mother would understand that better than anyone. Yet the full version of the thought still felt too unprotected to send by owl.
He turned the quill in his fingers. Then wrote, more slowly:
You were right about the robes, and the herb book is useful. Also the cauldron is heavier than it looked in the list.
He stopped and almost smiled.
That sounded, finally, like something she might hear in his voice rather than as school report.
The page had begun to fill.
The act of translation remained strange. The more he wrote, the more he felt the division between Hogwarts-in-memory and Hogwarts-in-life. The castle was no longer only wonder. It was routine, drafts, corridors, difficult house divisions, poor rules about bathrooms, ordinary hunger between meals, and one subject that had already become a kind of home. How did one write all that to someone for whom Hogwarts was at once past life and present absence?
He wrote less than he felt.
More than he had ever written to anyone before.
At last he added:
I saw Lily sorted into Gryffindor before I was sorted into Slytherin. She seems to suit it. The houses are more serious than they first sound.
He stared at that line a long time.
It was the closest he could come to saying the castle had divided what life before had allowed to remain daily. It said less than he meant. Enough that his mother would hear more in it than another reader might.
Then, after a pause, he wrote the one sentence he had not planned:
I think I understand better now what you meant when you said some places are colder in different ways.
The words sat on the page with dangerous clarity.
He nearly crossed them out at once. Too much. Too direct. Too obviously a reach toward her past through the present.
Yet the sentence was right.
Not because Slytherin or Hogwarts or the hidden world repeated Spinner's End. They did not. Because every place, he was learning, built its own forms of difficulty into stone and custom, and one survived them partly by learning what sort of cold belonged where.
He let the line stand.
At the end he wrote only:
I am all right.
Not happy. Not very well. Not do not worry, because his house had never spoken in such theatrical reassurances. All right was both more accurate and more generous. It allowed difficulty without surrendering to it.
Then:
Severus
He sanded the page, folded it carefully, and addressed the envelope.
Mrs. E. Snape
Spinner's End
Cokeworth
The address looked smaller than it should have after all the castle had become in his days.
He sat with the sealed letter in his hand a moment longer.
The common room had darkened. Torchlight and fire now held the room fully against the lake. The green-black water beyond the windows reflected the interior back in wavering pieces. Somewhere upstairs or beyond the wall, footsteps sounded and were gone. A first-year boy on the far sofa had fallen asleep over his Transfiguration notes and an older student kicked the table leg lightly until he woke rather than letting him dribble onto the parchment.
The hidden world had become ordinary enough to make such scenes possible.
That fact remained the deepest impossibility of all.
Regulus, passing behind him on the way to the stairs, glanced once at the envelope in his hand.
"Home?"
Severus looked up.
"Yes."
Regulus nodded as if the answer belonged to no social category beyond itself and moved on.
Home.
The word felt different now than it had in the front room at Spinner's End or in his mother's sentence before I left home. Hogwarts was not home. Not yet. Perhaps not ever in the same way. But neither was home now a place he could think of without the lake windows and the smell of Potions and the Hat's judgment standing alongside it.
The world had split and broadened at once.
He rose and took the letter to the owlery dispatch box by the common room entrance, where outgoing post for the house was collected.
His hand hovered half a second above the slot.
Then he let the envelope fall.
It landed among other letters with a sound far smaller than the distance it would cross.
The first letter home had gone.
Nothing in him felt lighter for it.
That, he thought, was also truthful. Writing had not reduced the scale of things. It had only given some of them shape outside his own head.
Later that night, lying in bed under the lake with the common room quiet above and the water moving beyond the window, he imagined the letter in flight.
Owl over grounds.
Over dark.
Over the ordinary country that did not know itself overflown by hidden routes.
Toward Spinner's End.
Toward the kitchen.
Toward his mother unfolding the parchment under weak light and reading lines that said less than he meant and more than he had ever sent anyone before.
Telling someone where you are.
Lily had been right.
He still did not know how to explain Hogwarts fully.
Perhaps one never would from outside it.
But the letter said enough, he hoped, for Eileen to hear not only what he had written, but the strange act beneath it: her son, in the hidden world at last, trying to translate it back across the distance without losing either world entirely in the process.
End of Chapter 45