of course your wife is laying out all sorts of terms, that she too probably knows are unreasonable, she's angry and hurt and questioning the one relationship she thought she could count on. decisions cannot be made with tensions this high.
you need to give her time. she's a mother. she knows the 6yo is innocent and is entitled to know her father.
i think you should write to your wife. i'm a big fan of writing cos you can take time to say everything you want to say, how you want to say it, and the receiver has time to process what you're saying without having to react, basically there's less shouting...
a proper letter, by hand, not a text.
absolutely no 'it wasn't my fault'
it was your fault. you are a grown up, the responsibility to say no and walk away was yours. own it. apologise for it. if you project onto this other woman you will do yourself no favours.
tell your wife you love her, you will do what it takes to make this as right as it can ever be, but you cannot abandon your daughter, you would be less of a man if you did that, and you hope she will come to see that she as innocent a victim as your wife is in this mess.
if you think it appropriate ask her to come to poland, to meet your daughter, or not, whatever she is comfortable with, more so she knows you are not shacking up with this other woman every time you go.
also explain that one of the reasons you came clean was that you were unable to live with yourself any longer, and as part of that you need your adult daughter to know the truth also, and would like to discuss the way in which your wife would best like you to tell her as soon as possible.
tell her you see your future with her, and you understand that you are most certainly not entitled to at this point in time, but you love her and hope you can discuss a way to move forward as soon as she's ready.
you do have options, you are behaving like a wet blanket. you fucked up royally, now you need to make it right. not right for you. right for the people you have hurt. your wife and your daughter.
do not shout
do not rise to insults
accept the verbal onslaught you deserve
also you must accept that your wife will never get over this. it will hang over your relationship for the foreseeable future whether u cut your kid out or not. do u want to live like that? she will not just get over it because u do as she says. can u live with yourself if you don't ever see your child again? or with that be the death of your marriage anyway? you really need to think about what you want, knowing things cannot and will not ever be as they were.