“girlfriend rides car flat” What now, ask for help!!!

Moin Moin boys and girls, Yes how and where should I start, fortunately no one came to harm just Anyhow my car is completely damaged Actually I wanted to sell the car, but that’s probably done now, will see if I can put in pictures of the car afterwards, but that’s next thing, because I have some questions here to The Experts. I try the case to signs: My girlfriend was on the road with my BMW last night to get a For whatever reason she drove past the driveway and then wanted to turn at the next intersection. However, this attempt failed….She drove on the ancestor road to the next intersection, then drove a little further to the right onto the intersection, put the turn signal to the left and then wanted to turn. Well, she started turning and had already covered over half of the curve, as a small car, which drove on the ancestor road, her fully into the B-Sä ule and the rear door of the driver’s side drove in. Both cars have a total damage. According to the police, the driver of the small car was probably a bit fast and if you look at the cars it looks as if the driver had also fully stopped. My wife had already managed the curve and at that moment he got them full! At the moment is probably the full fault of my girlfriend and now I have some questions about the procedure: – Since I the holder of the PK Who am I, would I like to know how the insurance works, because my girlfriend has driven!? – Who is now upgraded, the holder or the driver?? – Does my girlfriend really bear the sole guilt?? questions about questions….I don’t know where to start I’m really happy that nothing happened to my girlfriend, but how is it going now?!?!? Thanks in advance greeting Ricky