OK, maybe this is getting into Beverly's issues, but - her house? It's a house. She was dying. You can't take it with you, and we don't preserve houses as shrines. Either you leave the house to family who is taking care of the kids and have them move in - probably less disruptive to the kids, and maybe better since the house already had bedrooms for all of them and they could stay in the same schools and have the same friends in class and in the neighborhood - or you ask for the house to be sold. If she really wanted the house to go to her kids eventually, you can set up a life estate where her brother could live in the house until he passed and then it would go to the kids, or set up some kind of trust where everyone could live in the house until all the kids graduated high school and then they'd figure out what to do with it.
I don't know if "perhaps she saw him circling" is how she felt, I certainly hope not because if she was not trusting of Barry's offer to run the business for the benefit of the kids, and not trusting of her brother to raise the kids in the house where they were already growing up, I don't think that says as much about Barry and Wayne as much as it does about Beverly.
How soon did the mother die after the father? 17 days was it? I don’t think she was thinking much about details at that point , or perhaps someone was guiding her.
Interesting that the uncle helps out financially so much. I wonder if there is any animosity towards the sister that she did not find the family worthy.