@paato,
I'm with ehBeth. You seem controlling, easily annoyed, and it seems you leap to conclusions.
She took the car with permission. It was brief. If you weren't there, you wouldn't even know about this OH SO HORRIBLE infraction that is going to go down on her permanent record with you.
You don't sound like a terribly forgiving (and she didn't even do anything wrong, sheesh) person, either.