How to deal with adult daughter's bad decisions?
Our daughter just turned 21. She is fixing to begin her senior year of college, has 4.0 average. Varsity cheer captain, lofty goals for her life, basically has life in her back pocket. We have always supported her financially, but she has worked part-time since early teen years to have her own spending money. She has always been very mature and responsible for her age. She has always lived on campus with a full scholarship; although she has mentioned on a few occasions moving into apartment with girlfriends. We would tell her we would support her financially but if she chose to fore go her paid room and board at school, we would not help her financially with an apartment.
Well, she met a guy at college. She has moved in with him AND his roommate in a run down house. When the semester was over, she moved some of her things home but took most everything to his home. She would come home once or twice a week for a few hours. We also found out she had told us several lies about the guy and his situation. We also found out she was giving the guy and his family/friends her car to drive. We asked her to please stop since car/insurance was in our name. She kept doing it several more times. When we confronted her about her living arrangements, she stated she considered herself living with him. We, at that point, told her we would no longer support her financially. We asked her to come sit down and try to talk this all out and she refused stating "we were not going to corner her without him".
We never had a problem before talking through situations. She has repeatedly disrespected us as parents, cursed us, blamed us for all the recent problems. We have found out she is also having issues with her advisor's at school, as they have had issues with our daughter, which also involved this guy. Our once very close relationship is severely strained and we don't know how to approach situation going forward.
Any advice would be appreciated.