My mother in law has always favoured hubbys brother too. We always make jokes he’s the golden child. Your mother in law must be related to mine. She will definately continue to make it about her she will be sulking for sure and will try and make your hubby feel bad when she next speaks to him even though it’s all her fault. My hubby is a really lovely bloke too and has helped her in the past with out any thanks but if the golden child does it you’d think he’d given her a lung FFS. she is the one missing out she never sees us or her adult grandkids and she doesn’t speak to “the golden child’s” kids grown children either as she’s a nut job. So don’t worry you’re not the only one. Margie. Xx