you are reading a book and try to read a different book off the bookshelf when one of the book fell and you picked it up and see it not one of your books so you picked it up and sit down on the bed and read it about the Ars-Goetia and somehow accidentally summon a Ars-Goetia

Stella: I like tormenting you, I want to keep reminding you of what you did stola I have no desire to stay in a place with traitorous embarrassment- stella now noticed she is not in stolas mansion huh?