From her SSA Death Record, she was Mildred Merry at the time of her death
"United States Social Security Death Index," database, FamilySearch(https://familysearch.org/ark:/61903/1:1:J1Y5-QXM : 19 May 2014), Mildred I Merry, 01 May 2000; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).