Oh, that breaks my heart to read. It seems especially hard when its a child and the parent is the alcoholic. I know how needy my teens are right now; I can only imagine how your SD must feel. Is there any programs she attends or can attend to help her learn to cope with alcoholism I am thinking of Ala-Teen but I know there are others.
So glad she has you for support. Sounds like she won't be getting it from her Mom anytime soon.
So sad...