This was very fun! Have you ever seen the TV show "Ghosts"? There's a UK version and a US version - I prefer the US one. Most of the ghosts there are tied to the place they died; one is tied to the car she died in; a few are tied to people, in that they can't go more than maybe 100 feet away from them? It's a fun premise, and I like that Corey was amenable to her hanging around, at least in the short term. She seems like a very considerate ghost.