This is all so sad.
@RussellSue, I am in no position to give advice, so just my feelings on being the scapegoated defector in my family, possibly analogous to your sister.
My brother and I talk and my brother and our parents talk, but I don’t talk to our parents. So he feels stuck in the middle, or has. Last yr he started having glimpses of memory from our childhood; previously he did not remember anything the way it happened, even to him, even in front of him. He believed until last yr that I’ve never loved him and he didn’t understand why I didn’t. I’ve always loved my brother- always. We’ve been in and out of each other’s lives since middle school. Our parents played us; my brother’s version of me is a twisted fantasy story. I was not allowed to know my brother. Or my mother.
Anyway, from the perspective of the outsider, I do honestly feel a bit slighted by my brother now knowingly choosing to remain in communication with our parents. It’s just my feeling and not a judgement on him. I do understand why he does,and he needs time to sort out what he’s just now figuring out for the first time. I don’t envy him in his Herculean task; I started working on my trauma when I was a teen, when I realized I was being abused, which was after I was forcibly removed from my parents home by ambulance and made a ward until I turned 18.
But personally I’m not sure how long I can tolerate the cognitive dissonance of split-loyalty. Maybe until I die? Sooner? It’s similar to when I narrowly escaped the abusive x with my children; there were people who then said to me that they wouldn’t “take sides.” My thought in my own life: Hm interesting; you happily sit on the fence of abject horrific abuse? Okey dokey; good to know.
So for now, my brother just doesn’t know enough to make decisions even for himself and his family regarding our parents, and I get that and don’t begrudge him being very cautious. I don’t know what it’s like to be suddenly at 40, remembering a few incidents, let alone the cascade of consequences of myriad ones that I am still figuring out. I know the things I’ve not blocked out, and my brother is just starting to remember.
At a point though- not sure what or when that is- it stops being acceptable to have tea with the enemy. It’s starts looking to the worse-off one (? Who knows really) like turning a blind eye to unpunished war crimes. Not that you are at all- you know the situation. How would I feel if my brother knew all of it consciously? I’m not sure. I think I’d toss him into the same pile of gross where my parents live in my mind.
How does your sister feel about your acceptance of your mother in your life? Have you and your sister teamed up to be on each others’ sides while allowing for you to take responsibility for caring for your aging mother if needed?
I don’t know what it’s like to be in your position, let alone with the complex dynamics you are navigating; im sure you’re doing a good job and considering everything. It just seems really hard, and I’m sorry you’re in this shit-soup.