Do I try and repair my wife's relationship with her mother or just leave it.

[Chan790]

6. No. It's rough but it's not in us or for us to repair other people's L/T fucked-up relationships.

What you should do is support your wife and do whatever she think you should do.

Perhaps that actually is act as an intermediary to smooth their relationship. There are a lot of reason why she could want that such as you're more even-keeled because she's not your mother, it's less toxic or problematic if your MIL dislikes you than if she's engaged in active hostility with her daughter your wife (It can be tough on grand kids.), etc. I do doubt however that is what your wife wants unless that's what your wife says she wants.

It seems like what your should do is have a conversation with your wife, preferably over a relaxing dinner and discuss how she wants to relate to her mother and what you can do or not do to that end.