Have a SIL (wife's sister) who inherited an extra share at their mom's death. Wife and SIL had two brothers, and one is mentally disabled, in institution, and on SSI. Mother did not want to set up special needs trust for the disabled son. "Too much trouble and more legal expense" was the excuse. Instead, mother had her trust drafted stating that SIL would receive a half share instead of a quarter share, wife would get quarter share, and the other brother would get quarter share. Mother's intent was SIL would "caretake" the extra funds that would otherwise go to disabled brother. But it was on an "honor" system! Long story short, my wife is now passed, the other brother is now passed, and only the SIL and disabled brother are still alive. Disabled brother has no knowledge of his share held by SIL. And since he is a ward of the state, and can get SSI only if his assets do not exceed minimal amounts, he is likely to never "need" his share. So, SIL at this point can basically do with those funds whatever she wants. In fairness, SIL did do a lot of unpaid caretaking for mother before mother passed, so perhaps this entire situation is "fair" in the grand scheme of things.