My brother (only sibling) died three years before my mother. He had two sons. When Mom died I had control of her estate. I sold the house, paid the bills, funeral expenses, etc. I subtracted my considerable costs for all this, plane tickets, etc. Of the remainder I gave myself 50% and the two nephews 25% each. Mom said she had instructions written down but we never found them. I did find a note on a CD that she indicated if my brother or I predeceased her, our share was to go to the kids which is what I did.
Some had criticized me for not giving my daughters a share.
When my and my spouses parents died we saw to it that the kids got a share. My dads house needed a lot of work to get it on the market and clear out the semi-hoarder cap so we paid them to clear it out, clean it up and do the painting. They were paid well for this. They got to pick from the furniture what they wanted (not much as to the style) and the rest was sold in a yard sale. They split the proceeds.
We also took them on Vacation to Florida. Condo on the beach just north of treasure Island. Fair as we could be.
To criticize how someone handles an estate unless you are involved in it is pretty much verboten in my mind.