I'm old...and not well. Worried about my wife's finances after I'm gone. She has early dementia.... [View all]

I have simplified our finances as much as possible, but she simply cannot do online banking or organized financial stuff.
We have kids, but they have busy lives of their own, and I don't want to tempt them with the considerable amount we have. I want to keep every dime for her care, should she need specialized care and I am not there to see to that care.

Do people in my situation hire financial managers?... people who can pay bills and transfer money and generally overlook our finances? Accountants? Money managers?

How does one find such a person, and what safeguards I/we have that money won't be misappropriated?