J., my first response is to just send you a big, warm, mommabear hug--no matter what has happened and how it has come about, I know just how much this hurts. There is nothing quite like the feeling that comes with the early weeks, months, and years with your precious new child--that closeness and intimacy can't be matched by ANYONE, not even your husband in a perfect marriage. So, if it happens, there is ALSO nothing quite like the feeling of rejection and hurt if that child who was so close turns against you. It's stronger than a divorce, because of all you've been through with and for her.
I've been there--different scenario and different reasons, but a daughter who was so hurt and angry that she completely blamed me for everything, and rejected me for a few years.
I'm here to tell you that you've got to hang in there. Keep loving her, keep letting her know you love her, and keep those lines of communication open--no matter how many times she pushes you away. Offer support, let her know her daily life matters to you, and you want to be there for her in any way she needs, if she ever needs you--your love will not go away.
I really agree with everyone who is suggesting counseling--and Dionna who suggested NonViolent Communication, a technique that is very effective in building empathy and helping another person feel respected and heard.
There are many types of counseling approaches--I suggest a family systems therapist, no matter what other techniques or methods they incorporate, the idea is that the entire family dynamic is involved in what happens, so even though you will get help individually with how you participate in that, the therapist will work with other members of the family as well to help everyone learn a better way.
My daughter came back to being my daughter--we talk, she respects my opinion, and our sense of love is healing. There is no way to replace the lost time or get back to the track you were once on, but there is absolutely hope that, as your daughter matures, she and you can find common ground again and get back together.
Best,
Fiora