[Billy's pretty god at reading people's body language, so the glimpse of unease doesn't go unnoticed. Once again, his eyes soften slightly. He reaches out a hand to rest it on one of her shoulders, giving her time to push it away if the contact is unwanted.]

Hey, you just said your sisters would never hurt you, right? So if they end up doing something, then you need to remind yourself these things are not your real sisters and it's okay to fight back.

[Still, Billy knows it's easier said than done. There's a difference between thinking of something and actually doing it in the moment.]