@Max yes I see it . And then when I’ve talked to bm before she’d be the one to tell me “no don’t be afraid to call her out etc” obviously I still tread lightly but I think her responses are reasonable . If my daughter came to me saying someone was treating her unfairly or something then of course I’d raise my concerns or start a fight with someone . When I try and explain to my husband he imo is delusional . Denying that his daughter would ever “stir the pot”
My brother used to do this. Took them all sitting down and talking about it all to see he was stirring the pot to receive a sweeter outcome for himself. Dealt with it a lil with my sk, once they realized she was telling them both similar things about the other they chilled out a lot. They need to have a serious talk about this and stop rewarding her for bringing negative information about the other. Until they do this it’s likely nothing will change.