I have a 16 year old I am raising...I am 29 and have a 7 year old son. She is my baby cousin...her dad had a stroke and is being taken care of by family in another state. Her mother abandoned her with me to go be with a boyfriend in another state. She has been with me since she was 11.
Since that age she has been acting out. Nonstop boyfriends and lying about them. Last year, she was spending the night at her "best friends" house...who turned out to be a boy of course. She made a fake phone number to pretend to be the parent of said boy so I was texting her instead of a real parent.
This year, she stole the car and wrecked it. Lied about what happened until I investigated and found broken glass, etc. in the driveway.
I've grounded her numerous times, taken away her cell phone, etc. NOTHING IS WORKING. I'm 29...I'm at my wits end. No one else in the family is willing to take her in because of all the issues she has. I know it all stems from being abandoned and from having a bad mom...I've tried so very hard to provide her everything she needs...a nurturing environment and also assuring her that I would never abandon her like her mother did. I try to be loving, caring, etc. I don't know what else I can do...
EDIT: It wasn't just her also who came to stay with me...it was her and her brother who is now 18 and out of the house. He acted out also with drugs and lying but improved his behavior, graduated and got a job. He's doing well. Nothing I do is helping with the girl.
My question is what can I do to get her to stop lying? She lies even when she knows I know the truth. How do I get through to her? What do I need to do besides the usual things like talking, taking away things, grounding, etc.