Sabrina gives her a little smile that seems to be an admission of how important this is to her, that Rosie promises they'll keep her tied to the spirit of the person she chooses to be, rather than who she was meant to be.

She's quiet and still as she listens to Rosie talk, but with that same small smile, tired and content. "It's hard to say what's... important to me anymore. I wasn't raised like any other witch, and I guess I know why, now. But it's still a part of me, even if it's different."

Her eyes get wide and sorrowful, though, as she's perhaps a little sensitive right now for that kind of teasing. "Rosie, if you really think that about me, then I've done something terribly wrong. Don't you know what you mean to me? You're my best friend. I couldn't hurt you. Not like that, though I guess after seeing me do that to Nick, I wouldn't blame you for thinking like that." She pulls away a little bit, trying to figure out just how much of it is teasing.