Advice request: How to do with stupid relatives?

[Strangler Lewis]

I think Alex's advice was the right thing on the spur of the moment. For the long haul, however, unless these conflicts come up frequently, my recommendation is just to eat the sh*t they serve. This is your wife's family nonsense to sort out and stand up to, and if she's not going to do it, you'll just end up having a fight with your wife every time this comes up.