This is a little different then your guys is story, but I will tell it.
I have a visitor periodically at our apartment (or permanent resident.) Me and my Dad both believe it is a small girl. She seems to like to play tricks a little bit.
We have nick named her the Toast Ghost (sort of mean I know) because a lot of times she comes around we smell toast (weird ey.) I don't think she is a bad ghost, but she does some odd things. I remember once when I was very little (around 4 or 5 years old) I had gotten up from bed because I couldn't sleep. I went and talked to my Dad who was still awake. He let me sit whith him for a few minutes then sent me off back to bed. When I got there I looked and saw a hand creeping up from underneath my bed between the bed and the wall, sort of near the end of the bed. It looked almost black and speckley. It rouse up slowly and about 5 seconds later, almost as if it noticed I was looking, it withdrew its hand very quickly. I was not scared from the experience, I actually tried to rationalize it, thinking maybe the apartment below us was doing renovations and installing a light.
From then on, I keep a row of pillows between me and the wall.
Just the other night, I woke up around 4:30 and saw three black blobs (almost rectangular but roughly shaped) rush into my face in a row. No idea what they were but boy did I ever scream.
The Toast Ghost is known for other stuff, like turning on facets (hot and cold), to the furthest they will go, shaking wires, stopping when we go to check what it is, and then starting to shake them again, and she has even been heard, when my Dad called out his girlfriends name as he got home, he heard a loud inhale as if he had startled her. He thought he had, so he went into the living room, and no one was there. My Dads girlfriend was at her studio.