My MIL is here for DS1’s birthday weekend (she lives a long way away so comes for a long weekend). DH and MIL have a very difficult relationship. He is a different person when she’s here. So many special occasions have been marred by the atmosphere between them. I understand why he feels the way he does about her, I support him entirely and I think his mental well-being would benefit from going NC with her but that’s not my decision to make or even suggest. I’m on edge the entire time she’s here, and I’ve had enough. When she is here, he isn’t really. He ‘checks out’, is withdrawn and pretty much avoids her as much as possible. I don’t want to spend Christmas like this. I don’t want to force his hand, but AIBU to say that, for these reasons, I don’t want her here over Christmas? DH is military and we’ve spent so much time apart over the last 3 years due to his posting, I want to enjoy our family time and not spend it with a knot on my stomach due to seeing how much DH struggles being around her.