Hey y'all, my high school friend is feeling super down, as of late. And it defienetely did not help when she was sexually harassed the other day, and I don't know how to help. SHe has told me about all of her problems, that include: Insisting that our class hates her, not liking her body and not 'fitting in'. She has self-harmed in the past under another depression, and I'm afraid she'll start again. 

Everytime she talks to me abouth this, I don't know what to say, because I have not been through a depression before. I don't know if she thinks I don't care when I don't really answer except for the standard 'Yes, I agree' stuff. 

What can I do, as a supportive friend, to help her get over this?