My friend’s life is being ruined!!!

Has anyone been involved in something like this? What can she do?

My friend was in a relationship. He even proposed to her. He was very controlling and aggressive and she was afraid of him. Every time they hung out with us- they would fight. He even put his hands on her in front of us. She decided enough was enough and left him. He has since gone psycho. He follows her. He calls her work every single day- it’s been almost 6 months or more- I’m not sure. He has people who follow and stalk her. He threatens people who are close to her. She has since started dating and every guy she meets, somehow he finds out about and he finds them or calls them and threatens or kick their ass, hurt their family, ruin their vehicles or home, go to their work- he’s crazy. The guys she has met instantly want nothing to do with her. He literally says she’s still mine. He not only says he will get aggressive he has gotten aggressive towards the guys- just punched one of them in the face. He has broken into her house, he has forced her to take down social media because he stalks all her followers and messages them.

What can she do? She has a restraining order on him and since she has he hasn’t really came around but as soon as there is a guy in the pic- he goes crazy on them! If she starts another social media- he stalks her followers. He has other people who follow her but she can’t prove it- obviously it’s for him.though. What can she do? I don’t know what else to tell her and at this point she is becoming depressed. Keep in mind she also has a daughter and is afraid this can affect her.