My friends grandmother is abusive. Physically and mentally. It gets worse everyday because her grandma is a drunk. Me and my friends want to to to take legal action. Especially what happened tonight. She started cutting with s box cutter she found in the band room,and blocked me when I tried to ask her if she saved files or a throng after her drunk grandmother deleted everything on the laptop. I got worried and got 2 friends involved. Problem is...besides her grandpa and my friend there is no witnesses. No recordings, no proof except her breaking down texting me about it. Worst part is we’re minors and our parents just think she is exaggerating. Please help