I would say MIL is quite toxic and probably a narcissist. Obviously I’m in no position to diagnose her, but she meets all the criteria I’ve seen online, and it would explain a lot.
Whatever the label is, She’s very cruel to DH and all his siblings, constantly belittling and criticising them, playing them off against each other, she will make cruel jokes about their insecurities, comment on which siblings she likes best and least, and what she dislikes about each of them.
If Ive ever (politely) said anything, (just things like I don’t think that’s very nice to say about SIL, or BIL may find that hurtful) MIL will fly into a rage, swear, smash things around, cry, suggest I’m saying she’s a bad mum, or I’m picking on her (I promise I’m not!!) And I’m asked by DH and siblings to just keep quiet to keep the peace.
There are also small things that are all (in my opinion) part of this cycle of being cruel, then dangling a carrot of love/kindness, before being cruel again.
Because she’s sometimes ‘nice’ they think that’s the real her, and they excuse and minimise the bad. But the ‘nice’ version only ever comes when she’s getting exactly what she wants or she’s gone too far and someone is unhappy with her. No one seems to have noticed this pattern or they’re ignoring it.
They all say there’s no point talking to her (about any of her behaviour) as she doesn’t listen, and it only makes her worse.
Was there something that made you realise your mum wasn’t very nice? Do you think it would’ve been better to just not know?
I don’t want to just say ‘your mum is toxic!’ Because I don’t want to create a problem between us, or hurt him more by being mean about his mum.
I just feel so sad that his own mother is so cruel to him, and he must think he deserves to be treated that way since he allows it to happen? Or he just doesn’t want to rock the boat?