Girlfriend had an accident, and not let herself be given, what now?

My girlfriend had an accident today. The traffic light was yellow and she braked to stop, on it another woman banged on her back. So the back including the lamps are pressed in. Now come on: They then drove to the police (not called and let come) and had the one police accident report prepared. However, my girlfriend did not ask for anything and had it filled out… No European accident report, no copy of the police report. Accident report nothing Now I’m looking for advice what else can you do?