Believe me, I feel for the situation these people are going through.
I do not know these people personally, but I do know human nature. And I certainly do not want to invite an argument because of my opinion / view.
I can understand both points of view, husband and wife. And their desire to pursue what they know to be right or at least best for themselves.
Unless the relationship has issues, husband and wife belong together with their child as family should be. And I say this because travel and border crossings are a complete mess at best and more like a disaster. If they love each other and care about one another, their duty and responsibility is to each other and their child. No one else - no where else except for where all three of them can legally be together.
Personally, I would rather be in hell with the ones I love, than in heaven by myself or without my most special person. Having said that, if my most special person preferred to be in a place I could not go to as well, I would consider it to be selfish. And it would make me think very hard if I wanted to be treated this way. It's a very human, logical point of view and reaction I think.