My elderly DM (94) nominated one of my siblings as her sole executor in her will when it was written several years ago because my sibling works in finance. Her will divides everything evenly, but there are complicating factors such as family trusts, and properties to be distributed with equalizing payments to reflect different values. My concern is that the sibling appointed as DM's executor is actually very devious and dishonest. I don't want to give any outing details but I have recently discovered they have behaved dishonestly over many years on a personal, financial and legal level. DM is mostly oblivious. Does anyone have any experience of similar? Would you say anything or just leave things as they are?