I have been thinking about what I would do if this was my daughter. Yes, the manager has a duty of care to her staff and she has failed to do her job, which leaves your daughter and you with choices that you would rather not have had to have. This man chose to behave in an unacceptable and abusive manner. There is no excuse, regardless of his life experience. By not reporting his behaviour to the police, he is being given permission to do this again, maybe with far worse consequences. Your daughter should not work for a boss who has so little regard for her safety. I know finding work to fit in with her studies will be difficult, but her safety and her peace of mind is paramount. This is one time when I would be forceful putting my opinion across to my daughter. It is also the peace of mind of everyone close to your daughter that counts.