Side note. Our entire family has been destroyed by fighting over money. Money isn't everything. :)
Money has a way of being the perfect "excuse" for vicious people to expose their viciousness.
In my case, a certain person did things so despicable that in my view until they atone for their crimes (actual crimes, not just wrongdoings) in prison, I will never be able to even start forgiving them. Instead, they're living the high life. It's very sad.
I hope you and your family are ok, if nothing else the ones you still care for. These episodes in my life have certainly made me appreciate my immediate family in a different and stronger way.
For me, it was a lesson that absurd unethical behavior within a family happens in real life, it is not a thing of soap opera.
Fortunately, there was no crime committed in my case. "Only" obnoxious behavior, greed, and extreme selfishness.