Havent found a marriage or death cert yet but Abigail Lived to at least 81 years old.
she is 60,living in Union City,PA with daughter Susan
& her husband George Logan. George & Susan were married in 1880 and eventually moved out,they are seen alone in 1880 census
she is found living in Little Sioux, Iowa with a nephew and family. This nephew LD Wellington who was born in PA moves his family to California by 1910. Abigail is not with them so I assume she died some time between 1900-1910. Either in Iowa or Calif.