I post this old death because a recent Burke's (ca 2002) lists her as still living in Connecticut.
Edith Katherine Trench Dorr
Birth
21 Jun 1905
Richmond County, New York, USA
Death
25 Feb 1981 (aged 75)
Stonington, New London County, Connecticut, USA
Burial
Elm Grove Cemetery
Mystic, New London County, Connecticut, USA
https://www.findagrave.com/memorial/159348002/edith-katherine-dorrDaughter of Henry Marryat Trench, descended from a brother of 1st Lord Ashtown, and included in the special remainder.