Jessica,

Here's what I would do. I know she's mad at you, but I bet if you explained yourself and how you felt, she would understand. Do some research online about the causes of "cutting" and show her what you found. Tell her that you were scared, you didn't know what to do and all you wanted to do was protect her because you love her as a friend.

Hopefully she'll see that you really do care and that you want to be there for her.

It sounds like she needs a good friend like you.

Take care,
Kelly