Hi LFTL. I too am sorry you have to be here. This is a soft place, we have felt what you feel, wrong or right. It does so help to express it and bounce it off others. My son's behavior has been much as you described your daughter's.
True and powerful and very "taking charge" of you both. We have not always been this strong and we have regretted that. You have merely protected your family showing her cause and effect. She may still not get it-but that's "on her". It does sound as if you have gone above and beyond to try to help her mature. There is a cut off point. You don't quit because you don't love them, you quit doing what your doing, to try and save you. She has made many adult decisions, doesn't she need the opportunity to experience the consequences? It is the only way we all learn.
So like my son...we would not accept behavior like this from anyone else. BUT, when it's our child...lying, stealing, in-your-face disrespect is OK? Sometimes I think it was just too much work to try to fix it/me. When we were so exhausted, it seemed setting/keeping boundaries was "one more thing to do". We finally realized we hit bottom and it was the ONLY thing to do. We are with you. Prayers.