It's normal for people who were abused to abuse. It's a natural brain response. He still loved his sister. He's not a good person, but not a bad one either.
It's kind of harmful to say it's 'normal' for abused people to become abusers. abused people majority of the time lead normal lives aside from the excess trauma they experience. it's not a 'natural brain response'. billy, instead of ending the violent cycle, chose to continue it, and that's on him. you could justify abusers, murderers, even serial killers with that logic, which is why is strongly disagree with that. if he loved max, why did he abuse her? all he is is a bad person in my eyes.
