Love /
I need advice: divorce and my rights as a father in Poland [165]
Since you are asking for advice on a public board.
I would not move to a foreign country/no language with a marriage which seems to be ending. You will not only loose most of your legal power but you will also loose you friends' support network (which will be very hard on you psychologically) combined with being in a country where you cannot communicate/different culture - the results will be disastrous on you psychologically speaking - especially with a divorce looming.
As I understand you are thinking of giving into her conditions of trying to work things out, they will not, definitely not if you both move to poland where she will be on her territory. I cannot speak for her intentions, however, I do know, that changing a scenery is not going to solve the problems which brought both of you to a point where there is talk about divorce.
If you truly care about the marriage and/or daughter - go to a marriage counsellor in britain. If she refuses you can only get a divorce and hope to get a custody of the daughter (you can fight her in court and base your case that your daughter will have a better standard of living in the uk/that you have also been the provider for the family and your wife does not even work).
If you ever do decide to move to poland you have to do so with careful planing (get a job with a UK company doing business in Poland/take polish lessons). Otherwise it will fail.
I made a mistake of moving to another country for a woman giving up my former life and it did not turn out well..... The other tidbits about psychology and support network (which is needed in times of stress) you can ask any psychologist about.
Whatever happens with your family I wish you good luck :)