My birth father died, his will that stated his wife would be left the estate and on her death the estate would be divided equally between 6 children 3 by birth 3 by marriage . The problem is that the wife now has dementia and her oldest daughter has quit her job to stay home and care for her including her finances which include writing her self checks and having the mother sign . Is there anything we can do so she does not go though all the funds at her discretion and her benefit . Not what my father intended. Thank You much