with the ghosts, her sanity gradually deteriorates into a sense of madness, like she has predicted herself. However, after the first couple sightings, several weeks go by with no more ghostly encounters. It would make sense to say that fewer ghost sightings would have calmed her down, but it does not. She would continuously think about it and how it influences the people around her, such as the children. The governess can be viewed as insane because she recognized early on that these ghostly events might lead to her madness, and it did. Another reason that the governess can be considered insane is the fact that she is the only character that has ever plainly stated to have seen the ghosts.
At one point in the story, the governess thinks that she will be vindicated when the ghost of Miss Jessel appears to her and Mrs. Grose. The governess feels a “thrill of joy at having brought on a proof” because she assumes that Mrs. Grose can see the ghost, when in fact, she cannot (James). This is a huge hint that the governess is simply insane because she is the only one who actually sees the ghosts, and she is happy that the ghost appeared among both the governess and Mrs. Grose. In fact, this incident does manage to make Mrs. Grose feel frightened. Since the governess is the only character who can actually see the ghosts, she must be considered
insane.