US Immigration from Nigeria

I have a friend who came in from the UK & has been in US for about a year now. Got married to a US citizen in May 2019. They have been going back & forth about filling for her green card. They have all documents ready EXCEPT for the husband's tax transcript. They got a co-sponsor. But the husband doesn't have any record of filling tax at all, Shes so worried & nervous about going around because she has no papers.

What can she do? Or whats the head way for her situation?

Thank u vj family

Please have anyone get married on the first meeting and get his/her petition approved?

Good day all.. in 2016 I travel to the US on a tourist visa and spend 3 month and some months later I was going back to the us I was dinied entry and my Visa was cancelled, and I was ask to reapply for a new visa. 2017 I applied but the Visa was not approved and I was giving a banned.. now am married to a US citizen.. my question is. If she filled for a green card for me will the banned still stand?