She may have died in the mid 1880’s as it appears her husband remarried in 1887.

1891 census reports his parents were born in Scotland.
Family religion Presbyterian.

There is a record of James Baxter, born about 1826 in Scotland, having been a widower when he married Mary Laurie (nee Smith) in Hamilton, Ontario 1887 August 1. If this is the same James Baxter, his parents would be James Baxter and Betty.