I really struggle seeing my MIL in a group. Although we get on ok 1:1 in a group I feel like she is always comparing me to my SIL's and it is the kind of comparison I will never win. It wears down my self esteem and I leave the interaction feeling rubbish.
I decided years ago that I wasn't going to go out of my way to accommodate MIL I would set my boundaries hard. If it suited me to see her I would, for example if she visits I am super host. I gave up sending her birthday cards and Mother's Day cards. However When my DH called her and maybe have a nice chat with her. I have no problem with him taking the kids to visit her but don't bother going more than 50% of the time.
Recently my SIL has tried to arrange things for our two families +MIL. I just want to avoid because I know it will make me feel rubbish and excluded. AIBU to tell SIL will she think I am petty? Does it put her in an awkward spot? I know she will say it is MIL's personality and she is elderly/ lonely after covid.