Mother-in-law will be 90y/o in Jan. & had no representation when she signed. Her daughter lives in town & takes care of her daily needs & she is on home healthcare. It is highly uncharacteristic of her not to involve her kids in decisions & she has been losing her memory. She supposedly threw in the washer/dryer & fridge w/sale & he offered to buy her car for $1200- it only has 20K+miles. She claims the guy had an attorney with him & "revised" her will, in addition. Her daughter called notary to get a copies of any paperwork, since none was left, but was told it had been filed and she would have to wait for it to come in the mail. Mom-in-law supposedly cancelled sale per phone w/guy yesterday but was told he would bring paperwork by "next week". Son & daughter work- what to do?