Hi there. I'm glad you posted.
you can't change her. you can't help her. you can't make her want to get better. you can't make her be honest. you can't make her be a good mother.
Consider that this is the woman that you married, and that she is not going to change. if your name is on the house it could be that you tell her to leave because your not going anywhere. But either way, it kind of sounds like you guys need a break from each other...
As far as the daughter goes, sounds like she's out of control. Not much you can do there unless she's your daughter. It doesn't sound like you've got much control over her right now and it doesn't sound like that's going to change either.
Keep reading and posting. you'll meet lots of people on this sight who will be able to identify with your situation and support you in whatever you do.