What should I do with her?

Ok I moved to my dads afterall. I'm starting college in the fall for two yrs to b a PTA. I'm in a relationship that's over 1 yr 7 months with this woman. This summer I will rarely c her and will maybe only b able to come down like four times in the summer. It's been one week and I'm going this Friday. I have to hare vehicles with my dad till the fall until I have enough to get my new vehicle. Until then I won't have as much freedom. I'm only an hr away from her and I trust her cause in her past relationships she has NEVER cheated. I've done so much for her. My only food for the day I'd starve myself just to feed her. I'd stay up countless nights helping with schoolwork. I'd even help her and er mom out by taking them into town to grocery shop. Last night she called me and we talked, she told me she tried to view my yahoo answers account to c what I've asked and answered. I got upset at her cause she always has to get into my stuff. She then get mad at me and she said that so what if I break up with her, she won't care and that shell just move on. That hurt me real bad and I'm tired how she is :/. She is always negative and gets depressed over everything. She even told me afterwards that she said it cause she is negative. The girl never gets out. All her friends r my friends an they only invite her if Im aroud. So all day she is stuck at home. What do I do with her? She is also still hung over her ex and she actually feels hurt cause he has a gf now. He's over her cause I talked to him about it. She doesn't know it and she said that if I talked to him he'd ignore me and get mad at both me and her. Me and the guy talked and he is over her and severed all ties to her. So what should I do with her? I love this woman but it's like she wants to lose me. She's cried and screamed when we broke up the 1st time and I took her back. She revealed that she loves me and since last nights arguement I've been really hurt.