By the way, on this original question, even though it’s not applicable there seems to have been a clear misunderstanding. The affidavit of support doesn’t actually require the sponsor to pay for the beneficiary, it is a means whereby the state can reclaim any public monies used by the beneficiary. But in any case the affidavit of support for K1 only gets signed when adjustment of status takes place, and that’s not happening.
I’m sorry to say it is sounding like the poor sponsor just got used as a means to a visa, but without the beneficiary understanding the very strict limitations placed on K1 precisely to avoid this kind of scenario happening - or the fact that the affidavit of support does not provide beneficiary a free ride.