"Why aren't you proud of it?"

Alice sounds genuinely confused. Sure, sure, she has at least some grasp on social norms by now, considering even back home she has already been wandering the streets of London for a while by now. She knows stabbing people isn't exactly socially acceptable. But getting into fights...

"It just means you were standing up for yourself. That's a good thing. You seem to be a good person, so you shouldn't let anyone else put you down."