It's called immaturity ...
It's called immaturity, not crazy. The question is, do you want to try to help her mature, or give her up?
Well, here are some examples:
-She calls my house when I specifically tell her not to
Ask her if she cares about your feelings? If so, she'll respect your wishes. If not, you know she doesn't care about you.
Explain her the value of caring for someone, but following their wishes, and how that's different that caring for someone else in their mind to the point they
ignore their wishes.
-When I am not around my cell phone she will keep calling it until I pick up and tell her to stop(32 missed calls, 12 text messages in a row in 30 minutes time is the record)
Ignore it. Many phones can now do such. Turn her ring into a vibrate. Etc... Don't let it affect you.
-talks about how her life is so bad and that she wants to kill herself, when her life isnt bad at all, she is just a drama queen and I know for a fact she wont do it
Have you told her this? Have you told her that how good or bad someone's life is has far more to do with their own perception than reality? Why don't you make a date and be a Big Brother and Big Sister one night together? Let her see how some kids really have it rough.
Right now she's immature, the center of the world is herself and she'll either outgrow it or be pathetic. The majority of people outgrow it. She's probably one that will. Just get her to recognize that life is great and she has it pretty damn good.
-figured out my password for my voicemail and listened to my messages
Tell her that she violated your privacy. If she can't trust you then why is she with you? Since she can't trust you then what is the relationship?
-told everyone at her job that I cheated on her (I didn't) just so she can get attention
Instead of focusing on what she said, focus on the lack of privacy she just exposed for herself and you. That issues are between you and her and no one else, regardless of whether they are true or not. If she cannot respect that, then what kind of couple will you be?
-she gets in a bad mood and takes all out on me when I didnt do anything, but thats every girl I guess
Everyone has bad days. The problem is that people should appreciate what they have, not fear what they will lose. Otherwise, you are not enjoying it. Explain this to her.
If she listens, that's a start. If not, I'd attempt only one more time. If she still doesn't listen, you have your answer. Even if she does listen and say she will change, it will take time before she matures. But at least she will try. If she does not even try, again, you have your answer.
And in that case, switch to honesty. Tell her you want to only fuck her, but not have much to do with her except fucking and going out sometimes (if you enjoy that with her). Be honest. That's all you can do. I mean, tell her how she really hurts you -- repeatedly -- and that's why you don't want to do much other than fuck. But you wish it was different.