My SIL is a nice enough person, we're very different but she is a good person and we get on well.
Her mother, my MIL is just so bloody mean to her. She's bad enough to me but it mostly goes over my head and I try not to rise to it but the things she says to her own daughter make me want to throttle the cow.
There are many things but yesterday, the whole family met up to meet SIL's new baby (DC3), born 14 hours previously. The first thing her mum, her own bloody mother says to her is:
You'll have to get rid of that belly you've still got there.
WTAF?!!