Paternal Great-Grandmother

According to what's written on the back of this photograph--just one word, "Mother--" this is my paternal great grandmother, mother to William James Woods, grandmother to Robert George Woods, and wife of Robert Stone Woods. This is the only photo I've ever seen of her, and I don't even know her name. It's far too late to ask Dad. 

Based on other photos in close proximity to this one in Granddad's album, I'm going to say this was probably shot in the late summer of 1940, likely near Aylsham, Saskatchewan.