What should i do if my girlfriend is cutting herself?

A minor ?: If your girlfriend is a minor make sure t her parents or guardian know so that they can get her help. A school counselor is also a source of help. If she is scared to tell her family you can offer to be there for support. Encourage her to obtain professional behavioral health services if she becomes suicidal that is a medical emergency and she should be evaluated at the nearest er. Take care.