Why did you do this?

This story is about a 16 year old girl named Izzy, she just moved to her new house with her mom and dad, which once belonged to her grandmother. She goes to open the basement door to put boxes down there for storage when her mother yells,"Don't you dare open that door, young lady!" She is terrified and starts to back away from the door. The mother didn't realize what came over her, and apologized. If you read this story, you might just find the reason she can't open that door...