Violet

She had a horrorible life, at school she soffer some bullying and at home she had to bear her mother's drunk boyfriend.
She loved horror movies and also the death, because of that she had killed all of her pets. In order to that she had a "ritual": She wore a dress which looked like a princess' one and a skull mask.
After time passed by she not only killed her pets but also started killing people, specially those who deeply harmed her, starting with her step father on a halloween night while her mother was working.
After killing him she astonishingly felt powerful and decide to kill her oldest sister. As she was finishing to cut her sister's neck her mother arrived and saw everything! Her mother was so shocked that got a gun and shot at the mask girl and after seen everybody dead in the house she killed herself.
It is sad that the girl still haunts that house, and everybody that decides to live there is killed by something really strange on the halloween night.