The Watcher,
Tough Love is your only option. I speak from experience here.
I lived through the nightmare teenage years. I loved my daughter, I did not like her. She had three abortions, stole from me, refused to attend school, associated with skinheads and was arrested numerous times, mostly for drunk and disorderly, shop-lifting and breaking curfew. The last time I went to bail her out, a dectective stopped me and said, "leave her in overnight. If you don't she will never learn to associate her actions with consequences. You are not doing her any favours by comming to her rescue time after time."
I listened. I suffered huge pangs of guilt. What did I do wrong? (pretty much everything, really) How could I leave my only child in a cold and barren jail cell with godknows who else? Hard as it was I left here there.
She was seventeen.
When I finally picked her up the next morning, I told her in no uncertain terms that if she didn't change, she was out of the house the morning of her eighteenth birthday.
The courts forced her to attend N.A. meetings. I forced her to get a job and pay rent. She slowly came around but it was touch and go for a while.
She left on her own at nineteen.
Now she lives in Oregon and has a child of her own. Our relationship is better for the distance between us. ( We are too similar in temperament).
I hope that you can eventually mend your relationship with your child also, but it will never happen unless and until you take a stand.
I'm a firm believer that blood has nothing to do with it. I wouldn't put up with such behaviour from a stranger OR a friend. And neither should you.
There will be some guilt but you need to repeat the litany that she needs to experience the consequence of her actions otherwise nothing can be learned and you will continue to be victimized.
My heart goes out to you. I know how difficult it is.