If you do want her back the best thing you can do is ignore her.
Don't call her, don't write her, start seeing other people.

IF (and it's a big if) she still wants you, she'll come back to you....and then it will be on your terms and you won't be the whiny little beggar.

If she doesn't want you then no amount of begging or "fighting" for her is going to do you any good.
Even if you do get her back, it will be for a short time, because she feels sorry for you. She'll have no respect for you and walk all over you and leave eventually anyways.

:2 cents:

That's the most intelligent thing I heard since a while.
This is what I'll do ... Event if she'll never come back, cause this girl is all struggled in her head/feelings.

I'm just sad that I couldn't help her. We were best friends before we use to date and I know how sad she is about the fact that she couldn't love like a normal person. Her fear of being hurt is always in the way.

Because of that she is was monster. I feel guilty to leave a friend who need my help because I've too strong feeling for her ...

I would forget about her. If you really want her back and want to spend the rest of your life with her just ask her to marry you and see how she reacts.

It will be a yes or no, and you will know :)

I agree it's time to let her go