Stalemate about future

Yesterday I put myself in an - at first sight - hopeless situation again. I was talking with my girlfriend, and I asked her something that's been on my mind for a while.
I live in Poland now, since I moved here from Belgium (for her) last year. However, I would like to return to Belgium with her, since life would be a lot easier (for both of us). I didn't bring this up till now, but about a month ago, when I was negociating a better contract, and got denied, she mentioned a few times about 'eventually moving to Belgium'. So I asked her last night, if she meant what she said, if she would really want that. Then she went quiet, and I could see the question saddened her, just as I expected.

She answered she did say that and she thought about it, but she would never want to move. Her dream for many years is to teach, and she thinks she can't do that over there. I'm saying she can, either in an int. school, or learning Dutch. Another reason is her family, which she would miss. But tbh, if we would live there, we would both earn a lot more money, and she could easily go home every month or so, while now I barely have enough money to go every 4-5 months...

She then started to cry, since what I said meant for her that I would leave her someday if she never would move. And when she said that, and I didn't reply with 'I wouldn't move without you', she was really convinced of this. She started saying things like 'we should end this now, there's no use', 'i'm moving out tomorrow ...'. The reaction I expected, which makes me think why I brought it up, but I can't keep it on my mind either.

Remains the question, how to deal with this. Either wait, till she finishes university and maybe changes her mind (I would ofc want her to finish studies first). Or come to a conclusion that it won't work out after all, since I really don't see myself staying here forever right now. Or is there even a solution? Also right now, she's pushing me in a corner, which means if I don't say things like 'ofc i wont move wihtout you', even though I'm not 100% sure of that, things go tits up.