I just want to remark on how you completely nailed setting up Tricia. Even before she ever shows up doing anything, she’s already absolutely terrifying. I’m reminded of Procedure 110-Montauk from the SCP canon.

So, for anyone who might read this and find a buncha issues with Politely Possessed you should know I am burning these chapters down about once every three days.  I haven't pre-planned any of the plot and I am mostly a trashcan coming up with characters and settings on the spot so if you see problems lemme know.