This is from completing Zoey's storyline. I don't know all possibilities but here's how to meet her and what I did to finish it.
First, to find Zoey you need to
*** Spoiler - click to reveal ***Unlock the attic and go there at midnight i.e. after you've used all your charges. There should be a ghost orb floating in the middle of the room.
Then she will ask for
Finally, you need to perform the seance which needs