There’s a weird dynamic between my SIL and my MIL that I just don’t get and I'm
hoping someone can shed some light on it because their relationship has affected me over the years. I e known them a couple of decades.
In the past MIL has always criticised SIL’s clothes, weight, style, hair etc. and I’ve never, ever heard my MIL tell my SIL that she is, or looks beautiful etc. The most I’ve heard her say is that she looks nice, and “I suppose she is attractive in her own way”. In contrast, when I’ve seen my SIL look very nice, at her and other weddings, having lost weight and had a makeover for the occasion, MIL seems jealous. Once when I was choosing a present for SIL, MIL got annoyed and said “she’s got enough”.
She also highly criticised her past boyfriends.
My SIL doesn’t have very good self esteem.
In contrast, my MIL brags about her achievements and clearly prefers her to my DH. They spend a lot of time together, but if my SIL put a foot wrong she is punished severely, usually cut off for a bit.
MIL has tried these things with me in the past, and it upset and confused me, but in the end they didn’t work so she gave up.
They both hate my guts, and think I’m jealous of their relationship, but I don’t think I am. I’m confused by it.
Why do they act like this?