Story '' The Yellow Wallpaper '' by Charlotte Perkins Gilman ... What actions of the narrator show that her mental state is beginning to deteriorate?

The answer is she tries to find out the pattern on the wallpaper

When her mind starts to deteriorate (and she realizes that there is nobody she can talk to about her condition), the narrator starts to convince herself that there is a woman (first starting with just imagining eyes) trapped in the yellow wallpaper. She then starts to believe that she must free the woman from the wallpaper, which leads to her gradually ripping it off.

Afterward, she becomes extremely ill, she realizes that the woman in the wallpaper is her, and when she removes it from the wall, she is free.