The Rocking chair

My grandma lives in a very stereotypical horror movie house - small Midwest town, white and old looking home, on a farm. She even has a chipped wooden Mary nativity in the front yard. She also has a cemetery about a half mile down the road. I used to sleep in the room in the corner on the top floor (my aunt's room) and it had a wooden rocking chair in it. When I was younger I would wake up because I thought I heard it rocking, to the point where I would wake up my grandma and have to stay in her room. About ten years later my mom, aunt and I were talking about how creepy my grandma's house was. My aunt goes on to talk about how when she was younger the reason my mom and her ended up sharing a room was because she thought her room was haunted. She said she woke up one morning and the rocking chair was about two feet closer to her bed, and after that night, it would start rocking on a nightly basis at midnight."