I always felt his sister is unhinged, I doubt she has anything to do with this

Even if her accusations are 100% correct, I doubt it has anything to do with this. The messaging would have been entirely different.

For me the messaging is opaque, which makes sense if her accusations are on the money. I think? Open to opposing thoughts

I went through some of the same things. It’s crazymaking when substantially older members of the family do this shit to you and deny it happened.