My thoughts are with you and your daughter...
I truly wish you good luck with this. If I had experience to share I would. It's always so difficult to find the line between helping and enabling. I've been trying or seven years and I'm still never sure exactly where that line is.
So, I'll say only two things--to take care of others you must first take care of yourself, and get thee to an Al-Anon meeting. If you don't like the first one you go to, then go to a different one (at least six meetings in two weeks).
--Cyranoak