My mum saw a girl aged about 6-8 years old with a bag of crisps, I don’t understand what happened next

This happened when I was a young child, my mum was about 24 years old at the time and she was on a bus by herself, and she said that there was a girl about 6-8 years old with a bag of crisps in her arms sat on a seat opposite her. She said that the young girl looked directly at her and the crisps just started floating in mid-air, and she could see all the crisps floating out of the bag in the young girl’s arms. She said she watched in confusion as it happened, and could see the girl just staring at her and all the crisps just floating in mid-air, but they didn’t float towards her, it was just as if they were hovering in the same position as they were when they were in the bag. <br><br>She said the girl looked at her for a few seconds, then looked away, and all the crisps just went back in the bag and the bag was closed properly again. She said that all the other people on the bus didn’t bat an eyelid, it was just as if nothing had happened, and she said the girl just sat there normally and got off at the next stop, and that was it. <br><br>I just don’t understand how this happened, I’ve never experienced anything like that, but mum is adamant this happened. I’ve always been confused by it.