Pretty sure she could sue the VC and retire off their millions if they fired her for opening a rape case. By the way, you don't report rape to HR. You report it to the police, immediately after it has happened. And you go to the hospital and get a rape kit done. Rape isn't some microagression accusation you can just throw around when something uncomfortable happens. It is a felony.
If she does not report her rape to the police, she is allowing these alleged rapists the freedom to rape again. She is encouraging criminal behavior.
As such, the more likely story, is that your friend wasn't raped. She was "raped", as in, there was a consensual but unconformable sexual experience that she later upgraded in her mind to "rape". That word has been so diluted by social justice warriors that it has lost all meaning outside of the court of law. Once again, if she was raped, she can send her rapists to prison for a very, very long time. And sue the company for millions.
So, why isn't she doing this? Probably because she wasn't raped.