As the Mech Angel screamed one last time, Merlin lifted her hand and clenched a fist. In the next moment, Beatrice's soul was ripped out of the Mech Angel, separating the two with only a bit of struggle on Merlin's side. This magic wasn't easy to use; it was dangerous and could have countless unforeseen consequences. But thanks to Doma's curse, as long as Merlin only uses it inside her labyrinth, those consequences can be contained safely.
When the two were separated, neither faded away, which was a surprise. Beatrice's soul died and passed into the afterlife, while Mech Angel's existence remained inside Merlin's labyrinth, still struggling to free itself. Eldritch magic was quite effective against everything in the universe, gods and angels included, and with the addition of Doma's curses, chaining an angel down wasn't that impossible a task.
