Comment by Introvert on Snitch

She tells Vinter to return her piece and he tells her he doesn't know what she's looking for and he doesn't have it. Yvonne remarks that their reactions are the same. She tells him Penelope said the same thing and ran away before she ate her. Vinter remembers Penelope telling him she was brainwashed and barely managed to run away. (Okay this next bit I'm not 100% sure but I think she implies that she knew Penelope came here after running away from the house because this is where Derick found her). She tells him to stop it and give her a piece. When he denies having it she takes out another piece of the mirror and and says she'll use this.

He tells her it's useless because he's released from her brainwashing. He no longer feels sorry for her or misses her and only feels aversion and disgust for her. She agrees and puts the piece back into her pocket. She then takes a step towards him and he becomes nervous reaching for his cane. She tells him there's one thing the wizards have been mistaken about for hundreds of years. She tells him that she can't brainwash without a piece of the mirror. It doesn't make sense to use power through the mirror made by the wizards. It's the opposite in fact; the mirror restrains her power. Otherwise she would crush the human brain because she can't control her power. She then tells him he better tell her were the piece is before she crushes his brain and reaches out and digs her nails into his head. She screams and steps back with her hand burning.