[Spirit]

Little late, but thought I would throw my advice out there to you.
I agree with Hrae, you have to do what is right for you and what is best for you and your future. If going to this better school will offer you a better life and a better life for her, then go for it.
Talk to your girlfriend, explain to her how you simply want a better life for the both of you, and make sure she is willing to commit herself to a long distance relationship. With the internet, text messaging, and all the other technology out there today, you will still be able to have contact with her everyday. Go home as much as possible to spend time with her, and do little things to surprise her and let her know that you love her. Like Snail mail her a "just because I love you" card - those are a good suprise because noone does that anymore and it is something that she can hold on to and read over and over again when she misses you. Or send her flowers just for the heck of it, and not roses, but a bouquet of mixed flowers - save the roses for more serious occasions, and that way she will think of you evertime she sees her flowers.
Also, just remember - just because you start out at this school, does not mean that you have to continue going there. You can always switch schools if you find it too hard of a strain on you, her, your aunt, your parents, or whoever else this might affect. But, you dont want to end up ten years down the road, going I wonder how my life would be if I had only gone to that better school......