[Miranda_]

Aaron, don't be ridiculous. Hitting her parents back is not going to solve anything; they are both adults and could hurt her really badly.

Lauren, the thing to do is to tell a teacher or trusted adult straight away before things escalate. Can you stay with your grandparents or an aunt and uncle for a while, until things settle down? Please try and do something to fix this, as it will only get worse if you ignore it. And don't cut yourself or starve yourself; that won't help and both will be very hard to stop doing once you start.