Her daughter, Virginia, did die in Picton, Hallowell Twp., Prince Edward County, Ontario on July 7 1978 & she was buried in the Cherry Valley Cemetery. It is very possible that Annie had lived with her daughter. Virginia married in Pennsylvania in 1937 & her parents were alive and living on Darlington Road.

http://news.google.com/newspapers?nid=1144&dat=19370310&...
The Pittsburgh Press, Mar 10 1937
Marriage of Virginia Heron Wilson (her photo is here) to Jackson Capron Baird on Mar 3 1937, parents lived on Darlington Road

http://news.google.com/newspapers?nid=2194&dat=19780711&...
Ottawa Citizen newspaper, July 11, 1978
Baird - Virginia H.
At Prince Edward Memorial Hospital, Picton, Ontario (my note - Prince Edward County), July 7 1978, Virginia Heron Wilson of 356 Main Street East, Picton. Beloved wife of the late (John) Capron Baird. Daughter of the late Ralph Waldo Wilson. Mrs. Baird is resting at the Wahttham Funeral Home, 33 Main Street West, Picton. Funeral Service was held in the Chapel, Monday, July 10 at 11am Cannon R.H. Stewart officiated. Interment Cherry Valley Cemetery,