How do I get my Polish girlfriend back??

I don't intend to be rude but I cannot understand why anyone would want to ask this question of a load of strangers on the internet.

Simply email/write to your girlfriend, tell her the truth that you have told us about how you will go to Poland to be with her, etc.

If she does not want you to come, there is nothing you or anyone on the internet can do about it.

This really is something that you have to talk to HER about, not a bunch of strangers. Honest!