Angela Lam in the novel is presumably the main character. She is a divorce planner, which means she is likely involved in helping people organize and manage the various aspects of their divorces.
Since I don't know the exact story, Esther Jane could be the main character. She might be a girl or a woman who has a special connection to Christmas in the story.
Elisa Lam's story is really tragic. She was a young woman traveling alone. The Cecil Hotel had a rather seedy reputation. Her behavior in the elevator was really strange. It seemed like she was either scared or trying to avoid someone. When her body was found in the water tank, it was a shock. Some thought it could be a murder made to look like an accident. But the police determined it was an accident considering her mental state at the time. However, the whole case still remains a mystery in the minds of many people who are intrigued by the odd details.
It's difficult to say for sure if the Elisa Lam story is true. The circumstances surrounding it are mysterious, and the available facts are open to interpretation. Some aspects seem plausible, but others raise questions.
Yes, the Book of Esther is considered fictional. It is a story within religious literature that may contain elements of imagination and storytelling rather than being strictly based on historical facts.