I ran into a bit of a bug; When I first encountered the ghost, I decided to fight against being possessed. When I defeated her, however, the game immediately crashed.
I am on 0.62.011, so it is fully updated. I just did another attempt and I didn't crash, so it may have been because of the in-game time being at exactly 12:00, or maybe the gear I had on. Not sure, but I'm past it now.