Finally found her in the 1880 census, actual image shows the spelling is EDDO. She wasn't in Connecticut yet, still with son Abram.
1880 United States Federal Census
Name: Sally M. Edds
Birth Date: Abt 1806
Birthplace: New York
Home in 1880: North East, Dutchess, New York, USA
Dwelling Number: 74
Relation to Head of House: Mother
Marital status: Widowed
Abram P. Edds 39
Emma Edds 25
Jessie Edds 9/12
Charlie Edds 12
Sally M. Edds 74
Source Citation: Year: 1880; Census Place: North East, Dutchess, New York; Roll: 824; Page: 299D; Enumeration District: 045, Familysearch
- Her middle initial is "M" here instead of "A" as in other records, her grave marker also shows a middle initial "M" instead of "A".
- When given, her birth location is different in every record.