designguy

There is no judgement I am simply stating that if you are currently in the US and now submitting an application there is no way that it will be approved on your current stay which would allow you to adjust. Therefore you would have to leave the country and then go through consular processing as returning again with the intent to adjust would be fraud. The wait times in canada for consular are quite significant

You can not enter the US with the intention of adjusting status. You will need to go through consular processing

Even if you have an employer ready to sponsor you, there is no way you will get an I-140 approved and be able to adjust status in time if you are currently in the US. You will need to leave while the application is processing. If you overstay then you will not be able to adjust status

By the time of her flight she will have hopefully recovered. She can then get a note from a health care provider stating that she has recently recovered from covid. This statement plus her positive covid test from what will have been within 90 days prior to the flight should be sufficient. Technically people can test positive for up to 3 months after infection so this updated provision allows people who have recently been infected, but have recovered, to travel https://www.cdc.gov/coronavirus/2019-ncov/travelers/testing-international-air-travelers.html

You dont submit any documents. There is nothing you can submit that will help their case. They need to show strong ties to Nigeria.