Which sentence in this excerpt from Charlotte Perkins Gilman's "The Yellow Wallpaper" suggests that despite her growing insanity, the narrator still retains some awareness of what society expects of her? I tried to lift and push it until I was lame, and then I got so angry I bit off a little piece at one corner—but it hurt my teeth. Then I peeled off all the paper I could reach standing on the floor. It sticks horribly and the pattern just enjoys it! All those strangled heads and bulbous eyes and waddling fungus growths just shriek with derision! I am getting angry enough to do something desperate. To jump out of the window would be admirable exercise, but the bars are too strong even to try. Besides I wouldn't do it. Of course not. I know well enough that a step like that is improper and might be misconstrued. I don't like to look out of the windows even—there are so many of those creeping women, and they creep so fast.