my lady scared me

Last night around 12am she was falling asleep in her Rock n play. She's almost 6 months old. But I walked away to get something came back didn't see her. I looked she was on her back underneath the rock n play just laying there smiling on hardwood floor. There was no bang no crying where she should of fell and flipped to get how she landed was a glass scale. Wasn't even moved or turned on like I should of been. I picked her up no red marks or anything. Call me crazy but I swear the ghost moved her. I don't see how she didn't get hurt if she flipped or anything.