Addressing Harassment and Advocating for Yourself

Seeing someone we care about struggle in a difficult situation is often harder than struggling ourselves. I commend you for wanting to help. My assumption is that your university has policies and procedures around reporting, investing, and handling harassment. I would first encourage you to seek out and familiarize yourself with that process. There is likely a process through which you can report the harassment yourself, on behalf of your student, hopefully with her consent.
Now, there is some evidence in your question that the harassment your student is experiencing is either not documented sufficiently or not damaging enough to qualify as harassment under your university’s policies. Let me be clear and careful here. I do not imply that when a university student says she is being harassed we should do anything other than take her at her word. At the same time, two things strike me about your question.