My wife has poa over an ailing aunt who has been in a nursing home for almost 2 years. Her funds are now just about gone except for the sale of her house. We have cleaned out her home and maintained her one acre of property in New York state for this entire time. We have not taken any compensation for any of our work or time. We are one week away from selling and closing on her house. What, if any, is a fair and equitable charge for this service?