Ziggy--rough times, sorry you're going through them.
MTD has really good advice.
How old are you? You have to be home by 9:00?! Are you 16? Or are you an adult? Do you have a job? Are you financially able to go to school and get into a career?

It seems to me that you and your mother are really emeshed together and it's just not healthy. Golly, I really think you'd be better off not living there. Set some boundries. If she needs help, can you hire some? Maybe you could decide to visit once a week or something to do chores.
Are you seeing a therapist? What's his/her take on your situation?
About the drinking--get a grip, man. You were hospitalized less that a year ago, you live in an unhealthy environment, you are dealing with abuse in your past, you're hurting yourself AND you're drinking? That doesn't sound like good self-care. I'm not judgemental against you--cuz there are times I drink against my better judgement, too. But you might want to think about making a different choice.

One thing I found helpful. When I was in the hospital, my caseworker told me to think of it like it was a heart-attack--even though it was a suicide attempt and I was in a psychiatric facility. If one goes through a heart-attack, they have to make life-style changes if they expect to get better. Change what you can in your life, Zig, for the better. Your mom is bitter--that's her choice. You're in danger of ending up bitter in old-age too by putting up with her verbal abuse and living situation. You can't change her, but you can change your reactions to her. Like not believing what she says.

I like the advice to seek out a different church. You could find a church with a Saturday evening service. That way you're away from your mom. Then when she goes on Sunday, she's away from you. Enjoy the morning by yourself.