My gf needs help

My gf is in a residential treatment center where she’s being SA’d constantly by one of the students and no one is doing anything about it. She’s even called me after I left the program just to tell me things have gotten way worse. She’s even called wasn’t supposed to call me so when they found out, they were pretty upset. Needless to say she can’t call me anymore.

I have a voicemail from her from one of the times she tried to call but I can’t share it because it says her name and that would be illegal.

How do I help?