How does the reader know that the narrator's mental state has begun to deteriorate?

a. she tries several times to jump from her room's window.
b. she becomes obsessed with finding a pattern in the wallpapers design.
c. she screams at her husband and jennie all day to let her out
d. she writes constantly about her belief that she is immortal.

What is the problem with the following sentence: cameron, who has an extreme and unreasonable suspicion of other people and their motives, suffers from paranoia which is a psychological disorder characterized by delusions of persecution or grandeur, was absolutely sure that someone was following him even though he was absolutely alone and hadn't seen a car for miles and miles.

Why witchcraft often the explanation for illness

Who are the antagonists in the story "ali baba and the 40 thieves", and are they're bad guys?