I don't know if my MIL is worse than I thought but the suggestions about listing outgoings and having a set day for 'accountanting' would not work because everything we tell her she has forgotten within minutes of us leaving the house. For example, she was taken to the bank on a Friday morning by both sons to change joint accounts to sole (FIL has recently died). By Monday morning she was ringing the bank to make an appointment to change joint accounts.... yes you guessed. We had FIL funeral on a Thursday, by Saturday she rang my mother to tell her the funeral was cancelled for the following week because we had to get probate. My sister in laws mother, who she has known for 23 years was sat next to her at the 'post funeral do' and she said 'I don't know who any of these people are' SIL mother said 'well most of them are family, and there are some of Peters friends come to pay their respects' MIL said 'oh right. And who are you then?' On the Alz scale, this is bad isn't it?