I got this friend with a big problem?

My friend cuts herself. She told me and our other friend about it last year when she started. She started seeing a counselor on campus then went on to see a psychologist off campus. Eventually she just gave up and stopped going. My friend and I told her hall director about it last year (it’s a grad student who kind of watches over the students in the dorm). He talked to her a few times but it didn’t really go anywhere. Now she doesn’t even seem to care about what she’s doing to herself. She won’t talk about it with us, just shrugs it off. Her mother knows and has tried to help, but still nothing. I just don’t know what to do for her. I’m so scared that one day she will end up killing herself. Is there anybody out there who has any suggestions on what to do?