Have I got a poltergeist?

When my mum was home alone, she was hoovering a shelf in the lounge. She accidently knocked a picture of my sister and I when we were younger and it smashed on the floor. She dropped the hoover and brought the broken gl and the picture into the kitchen. Went she went back into the lounge, the attachement on the hoover was not attached to the hoover. She looked everywhere in the lounge to find it. She couldn't find it anywhere! When i got home from school, she asked me to look for it so i did. After about 10 mins, i found it on the other side of the room neatly stood up a against the wii and the DVD player. Have i got a poltergeist? Also, we have had other strange things happen.