A lot of the time sibling abuse is the result of parental abuse and/or neglect. My sister and I were both incredibly dysregulated all the time and often found ourselves deliberately pitted against each other by our abusive mother.

We were both incredibly angry and powerless, and conflict became our primary method of interaction. After I came out of the closet, it only became worse.

Neither of us has any interest in repairing or maintaining any form of relationship.