I got a good laugh out of how annoyed everyone was getting on this thread.
OP, I need to see a photo of this girl! I'm really curious as to how someone can have such a profound impact on another person's feelings without meaning to. What is so amazing about her?
I've come to the conclusion that you genuinely aren't serious about moving on. Sure, you play around with the idea, but it's not something you want. The sad thing, however, is that this girl seems to have had enough. Do you know how much you have to have pissed someone off before they block you on all of their social sites? Now I don't know this girl personally, but I'd imagine A LOT. Leave her alone. No, seriously. SHE DOES NOT WANT A FRIENDSHIP. She has heard you out, numerous times. She is aware of what a friendship could be like- NOT INTERESTED.
Also, you keep saying that you really want to patch things up with her. It sounds like there wasn't a friendship to begin with. Friends don't speak to each other the way she speaks to you and treats you. It's clear she never really saw you as a friend, I'm sorry but it's the truth.
Get on with your degree now. It's almost over. This girl doesn't care for you. Heck, I don't think she would care if you were hit by a car tomorrow. when you see her at Uni don't give it a second thought. Don't even make eye contact. She is just another person. Jesus. It's to the point now where she probably avoids you cos she doesn't want anything to do with you.
As already advised, immerse yourself into hobbies, study hard for your exams (priorities) and get some professional help. Things will get better if you follow this. I promise. She may seem godly today, but in a few months (PROVIDING YOU FOLLOW THE ADVICE) you won't think twice about her.
Why have you allowed this to go on for so long? You say you want it to end on a better note? There is no such thing. You've shown her how dependant and needy you are, thus explaining why she has cut you off. If you keep trying to contact her and you remain persistent with this self-destructive quest I promise you that you will regret it.
Don't email her anymore. Don't contact her at all. Book a GP appointment today or tomorrow (TELL THEM IT IS URGENT). Make a timetable to stick to (if it works for you) and study hard. Join a society and dedicate yourself to it. I don't care what it is. Learn a new language, anything really!
I'd like to just leave on one last note. While you are creating all of these threads (30+) and crying, shaking and stressing about her, SHE IS LIVING HER LIFE. SHE DOESN'T CARE. SHE IS GETTING ON WITH THINGS AND NOT GIVING YOU THE TIME OF DAY. Unlike yourself, she is happy. Understand now that a friendship (or anything else for that matter) can NEVER come out of this. How can it? you say you care for her well it seems like you're her only source of stress (and at times, sadness).
Good luck. I hope you look back on this soon and realise how far you've come.