The novel is told through a diary of a woman who is driven into insanity by several factors. The first factor was the lack of human contact. The second factor was the inability to distract herself from bad emotions and the lack of support. The beginning of the story contains several foreshadowing elements, which reveal themselves only near the ending.
Throughout the plot, the woman regularly mentions yellow wallpaper. The narrator sees it differently each time. At first, it seems unpleasant to her because the color is too dirty and unclean like her mind. It is the first indicator of her future mental issues.
The narrator tells about the broken greenhouses. ‘Broken’ in that particular case is a form of a forecast. It is used to describe broken (insane) people.
Another example of prophecy is when the main character first enters the new house. She feels creepy, which implies her future ‘creeping’ around the room. At one point, she described her home as a beautiful place. In another moment, she could not stay there for long. This is a signal of bipolar disorder as well as future hallucinations and schizophrenia.
When the narrator first discovered the teeth marks on the bed, she foretells that she soon would become insane. It indicates that she is not revealing the complete story of her illness.
When the woman first mentions the yellow wallpaper, it foretells that something wrong may happen because of that thing on the wall. This décor element can indicate her mental state. It is changing rapidly due to her madness.