Salaries in Poland have improved a lot depending on what kind of job you do. The main problem for the OP would be the language which would limit his possibilities.
She wants to make something out of herself, she wants to be seen with more respect,
What does she mean by that exactly? Poland is not a society that encourages people in their thirties to go to college or improve themselves. It's still a country where people tend to marry young and have kids in their twenties and by the time you're forty you're considered 'old' or certainly very much middle-aged. She spent seven years in the UK which does
encourage people to get educated, qualified etc. Did she take advantage of that? Did she get any qualifications and experience that will improve her prospects when she returns to Poland? If not, then, to be honest, unless she has good connections, she won't be able to do it.
Do people think I should be looking at a future with her in Poland or does the fact she was willing to drop me say enough about how she see's me?
Well it certainly mean that she sees herself as 'separate' from you and not as part of a couple. Couples make decisions together after a lot of talking, discussing and compromising but she's basically already decided what she wants to do and you can either go along with it or not, she's leaving that choice to you.
she wants to go spend time there alone first to find a home
Once again, that suggests she's not really thinking as your life partner, or half of a couple.
She was talking about finding new men with her friends once she's settled back in Poland.
If she really means that, then just forget her, in fact buy her a ticket and send her on her way now. She might just be playing games with you though.
Look, I don't mean to sound horrible, but she's in her early thirties, she wants to settle down and have kids asap. It didn't work out for her in the UK, she didn't find Mr Right. Polish women can be very business like and she won't waste any more time faffing about. She wants to get on with it but, and this is very significant, she doesn't want to return to Poland with YOU. You would be a liability. You don't speak the language fluently (or at all?), you would have to adapt to the culture (which is very different to the UK), you would need a lot of emotional and practical support for a year or so and might never really settle there. It is far easier for her to go back on her own and find a Polish guy who's sorted with his job etc. Polish people don't go in for long engagements or living together for years, within a year of meeting someone she'll probably be pregnant and he'll be delighted. So, I'd say, if she wants to go, let her and accept that it's over.