Anonymous wrote:I have seen the family dynamics in my own continue across generations. Your mother is unlikely to change. Offer DV resources to SIL and consider low contact and therapy for yourself. If you have kids I would not involve them with these dynamics and people.
OP - I cut off contact with my family (parents and brother) a couple years ago after my own separation due to an abusive spouse. I saw how my parents took the side of my ex. I don't have a relationship with the SIL as a result, which is why I heart about this through other relatives. I hope SIL has her own support network.