Perhapslove,
I am a parent, but not the parent of an addict, I just wanted to say welcome, I will say a prayer for you and your daughter.
Two things helped me immensely when dealing with my mothers addiction, counseling and the book Conversations with God by Neale Donald Walsh, the gist is God always answers, he may not answer in a way you immediately recognize, or he may not give you the answer you want, but he is there, he listens, and he loves you.
Best of luck to you,
Bill