(((foool))) - I'm sorry you're going through this. I'm a recovering addict and a recovering codie. Thanks to the financial shape I got myself into, I'm a grown woman, living back home with dad and stepmom.
If I were to use again? I'd be out the door, despite how much my family loves me. They simply will not tolerate that. They are NOT my only option. The money you're mom is spending on alcohol could be used to find her own place. I was homeless, the majority of my crack-using days, in my 40's and I survived.
I think al-anon would be a good start, as well as reading other threads from people who have been in similar circumstances. I read, a LOT, when I came here and it really did help to find out that I'm not alone, and to get a clue how to deal with the A's in my life.
Hugs and prayers,
Amy