Reddit, a friend of mine showed me fresh cuts on her arm that she inflicted through self harm, what do I do?

Now, before you guys say something stupid like "Call the cops" or "Call her parents" I have already sent a message to her mom (I don't know her personally) and I am working on tracking down her dad via facebook. What do I do guys? I'm freaking out - I have already lost a friend to suicide and I don't want to lose another.