All the theories are appreciated nevertheless.

The ultimate reason though, going by the words of both M an W, was my “horrid treatment” of M. Although no explanation or evidence was ever presented by either of them, and every time I pressed the issue, they changed the topic or gaslit me further.
My conscience is clear there as I know for a fact that if anything, I’ve been way too soft with him.
The only one who actually was abused during this conflict, was W, by M, as I’ve had to wipe her tears and comfort her over it many times.