Anything is possible, and that is a good one! If Brad was actually working on finally helping Nancy getting a green card, then yes I would guess that would be a good reason to put things on hold.
I will have to go back and read but didn't wasn't there speculation that Brad had been promising they would move forward with the green card for several years? I think if that is the case, Nancy pretty much knew it was more 'talk' with little 'walk' and was giving him one last opportunity.
Kelly
Nancy's father said that today ... that talk about the green card was old news, but it never happened.