Hello. Apologies in advance for the long post but the detail is necessary for the full picture.
My parent has vascular dementia. They are still living in their home with their spouse (my step parent ('SP')). Their memory has got really bad; they no longer remeber what they did the previous day and often can't remember things that happened an hour ago.
SP, my sibling and I have power of attorney ('POA'). These have been registered but we have not started using them yet or sent copies to banks etc.
Several months ago, I discovered that Parent had put one of their savings accounts into joint names with SP 'to save tax'. This was concerning as we know they would never have done this previously. Parent was very shrewd when it came to financial matters and was keen to ensure that their assets would pass to their children via their will, while SP's would pass to their own children. I highlighted this to them at the time and was given short shrift by SP who said that we would be getting enough as it is. Sibling and I decided to overlook it this once on the basis that SP would be doing a lot of the caring but explained that big financial decisions needed to be discussed by us all.
Recently, SP announced that parent wanted to gift us some cash for us to enjoy now, so they have sold some assets and that they would transfer the cash to us. Sibling and I were shocked because, again, parent does not have the capacity to make this kind decision, SP did not discuss this with us before and also, as POAs we can't possibly benefit from gifts.
The money has appeared in our accounts and it amounts to tens of thousands of pounds each. We are both worried sick. Firstly that if we keep this cash we will be committing a crime; and secondly, what else is SP persuading parent to do with their money that we don't know about?
Sibling thinks that SP genuinely wants what's best for us, even though they are going the wrong way about it. I am more suspicious and think that the cash to us is some kind of 'softener' so that if we discover they have been putting more assets into joint names or making gifts to their own children, they would point out that we have had plenty anyway.
I just don't know what to do next or how to stop SP making these kind of decisions.
For completeness, parent's will includes a decent lump sum to SP in the will. House is held by the two of them as tenants in common and SP has a life interest in Parent's half on their death, which will pass to Sibling and me on SP's death. SP's half will go to their own children.