1881 census Kings Aylesford North Nova Scotia
Alexander, 59, b NS, cooper
Susannah, 57, NS, Baptist
Maria, 23, NS
Freeman, 19, NS, cooper
Emma, 17, NS
David, 15, NS
Ella, 13, NS
1891 census dampseys Corner, Kings, NS
Alex, 68, b NS, father b Scotland, mother b NS, cooper
Susannah, 66, NS, parents b NS
Neddonit?, 30, daughter
1901 census Dampsey's Corner, NS
Susannah, widow, 75, b 17 Oct 1825, NS
Maria Odessa?, 42, 12 Nov 1858, NS
David S, 7, grandchild, 12 June 1893
Nina Lelian, 5, granddaughter, 5 Jan 1896
I don't see Susannah on 1911 census in NS, nor did I find a border crossing for her.
No death listed on the NS Vital Stats board
1910 census has Eva V Gerry, widow, 38, b Maine, in Cumberland Maine with David and Nina Anderson.
On a family tree with Susannah on it, it claims that grandmother Nina Anderson said her grandmother was an American Indian.
There is no indication of this on any of the census.
If she died in Boston there should be a record of it there.