The police are generally depicted and described as abusive. The cult's head of security is a former cop who has no compunctions against unjustly detaining and tormenting a pair of convicts whom the cult "rescued".
Harper wakes up from terrible nightmares about her ex who tried to murder her. She exhibits some characteristics of PTSD. Characters who get upset can spontaneously combust, and this is described as happening often. It happens to Harper multiple times nonfatally when she wakes from nightmares and Emily Waterman nonfatally when she is upset by one of Allie’s outbursts.
There are no abortions, but the main character used to be a nurse at planned parenthood and her ex husband basically said she worked at “one of those clinics”
Really terrible and traumatic cat death considering how much it was built up to rescuing the cat before it is beat to death viciously with a shovel. Near the end of the book.
The protagonist is held against her will in her home by her deranged husband. She escapes. The same character is bound and has her mouth duct taped by a gang of teenagers as a punishment.
While there is no possession per se, the experience of being in The Bright bears some similarity to it: People forget who they are, share memories, and become easy to manipulate.
Suicide is frequently mentioned and described. Many characters die by suicide to avoid dying of fire or disease. There are depictions of people jumping from burning buildings. The protagonist contemplates suicide by drowning herself but does not act on it.