I didn't find the twist much of a twist to be honest but the story is no worse for that. A woman contemplates her life and its meaning, she feels happy but also slightly lost - her life seems only to please her husband. And then a chance discovery of a photo changes everything, her husband can no longer look at her the same and she wonders why she exists at all. The finish sees her happy in a life of her own making while her husband is finally able to move on with his.