Hi Ashi,
You are unfortunately just forced to be in one of those damned if you do- damned if you don't kind of situations. Adults can make choices as to whether they wish to maintain relationships with people who are criminally deranged, no matter how close the familial tie. (They might not be aware that they have choices, but that's another subject...
It's a different situation altogether when minor children are involved. There is a "co-conspirator" implication for one who is aware of child abuse and who does not try and intervene. It seems like you are thick in the muck of this irreconcilable type of situation right now. Whatever move you make or don't make, you are going to have to experience a loss or failure of some type. No matter what you do, it will have negative repercussions... now, or later... or both....
My heart breaks for you and others in your situation. This thread just flipped me out last night and I apologize profusely to anyone (mommy, thinking of you here.. ] who was offended by my crude manners. I have lost two siblings (only two I had) to suicide, and I attribute their excruciating difficulties as adults to the abuse we endured as children.. so so similar to what you describe. If I could go back and change anything..... I'd do it.... I'd kidnap them against their will and live in a freakin cardboard box if necessary, just so they could still be alive to try and recover and have a chance to experience "real" life. I miss them every day. I miss them every single day. Every single day of my life I wonder what if....... Everyday I wish I could go back in time and do something, anything, anything. Anything.
I hope you are safe, and well, ashi, and am glad to read you may have some comfort here.
love, lauralisa