Hi rcat,
I am so so sorry you have to go through all of this pain.
I do too believe that your daughter needs you. She could be misguided and blinded, I guess she is still young, but deep down there is the truth, just sometimes we don't want to see it. It must hurt like hell, but I am sure she will come around if you stay on the healthy path and don't let the anger and disappointment take over. Don't try to win her back, just be there, be authentic and don't let it get you down, even if it pours.
Lots of hugs