So I'm going to try making this as short as possible, a while ago I posted on here asking for help about what to do, my mom is with a man that molested when I was younger starting at the age of maybe 9 to 13 it stopped because I asked to live with my dad and when I came back it didn't happen again, I tried telling my mom before and she didn't believe me because she said I didn't know what his thing looked like and I would know what it would look like... He eventually admitted to it and she is still with him, these past two years have been hell, he was out in the street doing cocaine and I would stay with my mom and help with the four kids she has with him which I love more than anything and have taken care of them since I was 10 I forgot to mention that, that's a whole different story haha... Well during these past two years he has been out in the streets doing drugs has cheated on her I'm sure, when he would come home he said he would change and wouldn't, I'd find lines of cocaine in top of my surfboards when I would take them down to go surfing. Mind you kids live here! The worst it got to was they went out to a party one night and my little brother who is 8 got beaten up by his friends kids and my brother got blamed he was drunk and mad.. They left the party and my mom was driving... He told my brother everytime he lied about what happened mommy would get hit mind you my mom is one the freeway while she's getting punched in the face.. My mom and the kids got left on the side of the freeway she had two terrible black eyes they were closed shut... And she called me crying and begged her to pick her up.. She got picked up and we were staying in hotels for about a week and when we returned the one room that my mom lived in with the kids was a mess he ripped apart every paper and picture and broke everything in house, and I helped her clean it.  Even after all that passed she stayed with him, it's been a couple months since anything like that has happened around the house, but everyday I help my mom with whatever I can and she is beyond rude sometimes, I tell my boyfriend everything because I can't hold it in, she has seen my messages and says I'm a liar and that what I say isn't true and I want attention. I love my mom more than anything and I know that no matter what I will always stick by her side, I have respect for her, and would do anything for her. But I just can't keep living where I am, the kids have lice and I can't even go a day with out worrying what's crawling threw my head and how I can't even go out and do things because I don't want to be around people.. I've asked her to get rid of it and she said she won't because it isn't a big deal but my younger sister has scabs on her head because of it. I've asked my boyfriend to ask his grandparents if I can love in because I can't take it, I'm going to write my mother a letter and I'm going to read it to her about why I'm moving out and that I still want a relationship for her but I just want to do something for once that makes ME happy.. I don't want want to back it of this and knowing me I will try.. What are things to keep in mind when it comes to me telling her? I know she's going to go crazy and take ever hung away from me but I don't care about material items I just want out.. I'm sorry this wasn't even close to short but I need help.