I dunno it doesn't make total sense to me yet. Even if no one had heard from Jimmy, he's back in the country for over a month and doesn't say hi to his mom? His mom and wife/kid don't talk over that period, even though they live in the same town?
I know we don't know much about his parents yet. And I know I'm projecting modern relationships on a very different time. But if the showgirl lady = his mom, I don't think they did a good enough job of explaining that. I don't mind ambiguity, but that just seems lazy.