Okay, I think this was a bug. This was a one story house, though I checked under the foundation and looked for an attic, just in case. I left her on free will for a long time and no actions came up, but she's very good about getting her ghosts on her own. I think I found a bug. She got out of the house though, she faked fainting a couple of times and was fired for inappropriate behavior (just that house, not her profession) and walked away with smug satisfaction from acting in public.
Very possibly. On the upside getting failing one ghost haunting mission doesn't hurt you at all, I don't think.