Although the NPC says it is, it certainly is, but not asking why would seem too bland.
Da Fei hurriedly asked, "Miss Hilda, are you so certain she used to be a hero?"
Hilda shook her head and sighed, "If you hadn't mentioned Guxin, I wouldn't be able to confirm immediately. But once you mentioned Guxin, I saw more and more resemblance. Not just her, every girl present has remnants of the magic power left by the Guxin Clan's demon in their brains."
Da Fei quickly asked again, "Does Miss Hilda have a way to restore her hero identity? Even if it's just recovering more memories!"
