[legion]

Predators depend on a certain level of compliance from their victims. They pick people out who won't make a fuss and who put maintain a civil appearance above fighting back.

First, she should start documenting how unhelpful HR has been. This may end up in court one way or another. It's not unheard of for a company to fire the victim because it is easier than taking on the perpetrator.

Second, she should slap him and yell loudly every time he does something. Nothing is going to happen until she makes it uncomfortable for both the predator and HR.