Hey Ardmore.
I'm sorry that your life hasn't been the best. It's good that you are with your dad now, and I don't think it's a good idea to talk to your mum who abuse(d) you and has an emotionally abusive partner. I'm sorry that your sister is angry, but perhaps it's for the best that you cut ties with your family, even though it would be heart-breaking. Perhaps in the future, they'll understand.