I'm sorry if nothing I say right now can be of much help, I just wanted to tell you that - although I can appreciate that it really does feel ridiculously impossible right now - things
will get better. When you're at your lowest, the only way things can go is up.
Please try not to put
too much importance on that girl's reaction; she clearly doesn't know the
real you, just the depression, so her response has nothing to do with who you really are as a person. Plus, she doesn't seem to understand or sympathize with your depression, so perhaps seeing her wouldn't have been the best idea right now anyway. I know it's a lot harder than I'm making it sound and I apologize for that, I just don't want your depression to make this seem 100x worse than it really is.
And honestly, if your suicidal thoughts are getting that bad, as well as your urges and not eating, please call someone. Call your psychologist or therapist or psychiatrist and tell them it's an emergency (even if you don't feel it necessarily is), and tell them how you feel. They care about you and want to help you. They want to see you live and how matter how your parents may seem, I'm sure they want to see you live too.
Sending hugs and love <3