It is a shocking situation.

If they thought they were being smart by not telling you immediately, then no, they've made themselves look very silly.

In a similar situation (thankfully no deaths), I can relate to what you are saying. My brother lives in a fantasy world. His wife governs his life, except when he's at work. We are estranged because of her unacceptable behaviour towards me and our mother's poor influence. I know lies have been told about what I'm doing but eventually it filters out. This has happened to me recently, months after a particular incident. I put the record straight; a defining moment for some.

I'm being ghosted by some members of my family. It's their problem not mine. Be true to yourself