My Aunt is generally helpful with my grandmother- does her food shopping once a fortnight and sorts out any maintenance work on her house. She could do more but she probably does more than the others.
My mum stays with my grandmother once a month for 3-4 days, as she lives on the other side of the country. She shops and cooks and cleans for her. My other aunt does the odd food shop for her and visits every week.
She has the onset of dementia and can be quite forgetful, however, she recently told me that she had given my aunt's son £5000 over the course of 2 years as my Aunt keeps telling her that he can't afford x, y and z. My Aunt then takes the money and gives it to him. I wasn't sure if this was true so told my mum who asked my Aunt who admitted that it was true but made out that my grandmother wouldn't take no for an answer. This is not true.
We have also discovered that my Aunt has asked her for lump sums for her other child (500 and 1000) which she has also given. She has also given my Aunt a few thousand it has come out.
We believe that my Grandmother isn't really of sound mind to be parting with these large sums of cash and that she's being manipulated by my Aunt who is probably the most helpful of the 3 children in all fairness. But the sums of cash are becoming greater and more frequent. My mother hasn't asked for any money and my grandmother hasn't offered so it seems viable that my Aunt is manipulating her into parting with large sums of cash.
Nobody has power of attorney, however if they were to have it would likely be my Aunt as she is with my grandmother more than the others.
My mum is at a loss as she has always been very close to my Aunt and doesn't want to hurt their relationship, however, she can see that my grandmother is being used as a bank and she isn't happy at all. Particularly as my Aunt's children rarely even visit her.
What can she realistically do in this situation as my grandmother's health declines and my Aunt continues to take advantage of it?