americans don't like polish people
I don't think that's true; Americans in general like Polish people.
i was able to chat with her online on the camsite
Well, it sounds she is just trying to trick you. I wouldn't believe her (I doubt she's even Polish - did you ask her about her first name at least?). It seems you have fallen in love with her, but you need to realize it's probably her job to make you "feel good and needed" as long as it's possible (especially that you pay for it -- the longer she keeps you uncertain, the more money they make). More over, I wouldn't be surprised she was not the same person you saw online.
I would write her that you'd really love to meet her in person; but if she cannot, there's nothing you could do and you will stop any contact with her since you don't want to invest your feelings in something that may have never had a chance to realize in the "offline" world. If she doesn't write you back or still tries to provide ambiguous answers it means she doesn't care about you and it's better for you because you will know it in advance and can involve with a girl who will truly appreciate you.