I have a sister that is 13 and a little brother that is turning 5. Recently my sister got in trouble for being “fresh”. She got her phone taken away and we discovered she was taking inappropriate videos. Sending inappropriate text messages. Anyways, since she hasn’t had her phone she has been playing with my brother more often. However it seems like she wants a boy to touch her. She taught him how his dick gets hard. She taught him to touch her boobs. And she makes him lay between her legs. We try to separate them but it’s hard. Our may concern is him going to school and thinking it’s okay. Help? Advice.