The narrator in "The Yellow Wallpaper" is essentially confined to a single room in a large house. Conversely, her husband frequently spends his nights in town as part of his duties as a bigshot doctor. This dichotomy is the overwhelmingly dominant theme of the story, as the narrator’s attempts to cope with isolation wind up being the engine driving the plot forward.
The narrator is not liberated at the end of the story. Rather, she has simply fallen deeply into mental illness.
The narrator has successfully liberated herself by the end of the story.