I'd just like to add that I know I'm making excuses... I know I'm in denial, trying to ride this out. I'm working on the "me" half of this equation. I suppose, in the back of my mind, I'm hesitating to dissolve the household while my daughter is still living with us.
She usually defends AW in these situations, seeming to believe that some of it is my fault. AW has been whining to daughter for years that "Daddy doesn't love me any more", and daughter thinks I could fix it if I just showed more affection. Her recent threat to move out is the first indication I've seen that she's beginning to appreciate the reality of AW's addiction.
Anyway, the situation is complicated (whose isn't?). I'm just plodding ahead, day by day. I'm grateful for this forum to use as a sounding board.