How do I make this situatuion better?

Well my and my girlfriend have been going out for four months now and we were doing pretty good. But then it was going down hill. Since the beginning she couldn't really go out with me because i was 2 years older than her but then i found out another reason....her parents are racists. So i was okay with that for a little while, but then it started getting worst we couldn't do anything together, and she wasn't aloud over my house at all, and every time i when to her house (which wasn't often) her parents would be breathing down our necks. I really like her a lot, and i really don't want to break up with her because she said after 2 years she'll be going to college and then we can hang out whenever. She's 16 and i'm 18. What should i do?