I believe that, in The Vanished podcast, the SIL says that they assisted Sandra in getting the father's house sold and helping her to set up a bank account to put the money into so that she could live off of the proceeds from the sale. She did have her own bank account; possibly they were also on the account in case she needed help with financial transactions. Since she did not have a computer or cell phone, there would be no paying of bills electronically. The old checkbook would be relied on. It is also possible that her daughter and/or SIL paid her bills electronically for her, using her bank account to which they may have had access. In the same podcast, the daughter said that she and Sandra became closer after she had her children. On becoming a grandma, Sandra was given a new purpose in life because she was needed to help her daughter and SIL take care of the children. The relationship seems to be reciprocal -- give and take. We all know how valuable a good daycare provider can be. If that person is a loving relative, that is absolutely priceless. Sandra willingly accepted the help that her daughter and SIL offered. She, in turn, offered equally valuable assistance to them. All just my interpretation and opinion.