I'm not entirely sure as I haven't read it specifically. But generally, it might be about a vampire princess who is shut in, perhaps in a castle or some secluded place. It could involve her inner thoughts, her relationships with other characters, and how she copes with her situation.
Your local library could also be a good source. Librarians can help you search for the 'Shut In Vampire Princess Novel' within their collection. They might even be able to order it for you if they don't have it currently. Additionally, some e - library services might have it available for digital borrowing.
Well, the vampire princess herself is surely an important character. There might also be her servants or attendants if she has any, who play a role in her shut - in life.
I'm not sure specifically as I haven't read this novel in detail. But generally, it might involve the vampire princess's struggles with her shut - in life, perhaps her relationships with other characters in the vampire world or her attempts to adapt to her situation.
I don't think it is. Usually, movies or stories like 'Shut In' are crafted from the imagination of the writers and filmmakers. They might draw inspiration from various elements but aren't based on real events.