It must have been because it was Halloween.
Violet just didn’t do things like this. She was a nice girl. She was a disciplined girl. She had a good job and a lovely apartment. She visited her parents regularly. She fed her cat and went to the gym and sent thank you cards to people who gave her gifts.
It was Halloween, though, and sometimes when you put on a costume it just changes you. It changes you enough to do something crazy, if only for one night.
Originally she really didn’t want to go to the party. She didn’t even have a costume, but her friend Christine had brought over some rabbit ears and said “Just put on the sluttiest thing you have and you can be a Playboy bunny or something!”