USA, Canada / My wife is trapped in the US. [5]

I hope that someone one can help me. My wife and her exhusband came to this country then got divorced and she married me some time later. I'm a non-polish US citizen. Well she don't want to become a US citizen and she would really like to get her Polish passport renewed with her new last name and everything. Where should I start with her. The funny thing is that she is not a US citizen that can't leave the US. Sounds kinda silly.