Is it possible for me take a loan in Poland underneath her name? She doesn't have any income in Poland and the US right now.
That will not be easy. There are however many banks that take foreign income into account, still not easy. 9 out of 10 banks will ask about her income, when the answer is nill you will be told that they cant help and that will be it. Even if she owns property and you apply for a secure loan they still want proof of regular income.