Just a thought...
Living at home, under the same roof as the abuser isn't a safe place. But, one thing keeps coming to mind, while I read over your post and response to replies.
Has anyone ever mentioned Stockholm Syndrome and that you could be experiencing that.
Reaching out for help is amazing and the first step. It takes so much courage to write and share whats happened and still happening. There are a lot of people that can relate to what your going through and feel or felt. Reach out to them for support.