"My Polish princess you are making me feel uneasy and strange in my head, because we aren't communicating, please tell me what your worries are and what you want or need. I love you and just need to figure out how we are doing."
Polish women are generally fairly focused and self-sufficient. They have been brought up not to moan/sob/lay all their emotions at your feet and wait for you to scoop them up in your arms, dry their tears, tell them how lovely they are and that it will all be OK. I have seen families where if a child falls over and hurts itself, instead of being comforted, the child is smacked (while still wailing/bleeding/whatever) for having not taken care - having run too fast, having not looked out - and therefore having hurt itself. (I also have Polish friends who are horrified at this approach, but just to say, it is one common approach you will find - and that treatment of a child makes for pretty hard adults, I can tell you.).
If she is telling her friends she is happy, and if she is still with you, then stop worrying, and stop bothering her to tell you 'what she wants'. What does she want? Someone to love her, appreciate her, be with her, have sex with her, have fun with her, build a life with her, and occasionally honour her with, for example, a nice birthday present. You don't need to micro-manage her emotions - she will do this for herself, in private.
She is a very very different kettle of fish to us nitwits who were positively encouraged to say how we feel and be 110% honest at all times ... and that is something of the appeal for a lot of guys, I'd guess. That and the great bodies that most Polish women have.
The real gem is, of course, a woman like a couple of my Polish friends - one with a fine intelligence, warmth of heart, and balanced approach to life, along with a very light touch, and practically zero requirements in terms of emotional maintenance. She will tell you if she has a problem, and she will be hugely affectionate and share everything with you. And also get back her washer-board stomach within 3 days of giving birth. But that is the Holy Grail ... ; )
[And now I sound like I am discussing the characteristics of dog breeds, so I will stop] [Especially since if I run with that, the British women come out as tired spaniels on special offer ...]