I think it might be time to record what is happening to your daughter in the night. A video camera could very well pick up sensitive material. also, if there are visitors coming to see your daughter, you would need to find out just who they are.
I also suggest you contact this person, Ryan. He could help you find out what is going on, whether it is good or bad. It seems to me that if your daughter is getting bruised sometimes with this thing, it is not a good thing to have around. It was probably something you might want to eliminate here. Good spirits I doubt would hurt a child. Ryan is at:
http://www.aetv.com/paranormal-state/
There's a place where you can email him your story.