What excerpt from The Yellow Wallpaper by Charlotte Perkins Gilman shows the use of verbal irony?

An example of verbal irony in The Yellow Wallpaper by Charlotte Perkins Gilman is when the narrator says, "The faint figure behind seemed to shake the pattern, just as if she wanted to get out." This is ironic because the narrator is actually the one trapped by societal expectations and her husband's control, not the figure in the wallpaper.