Carmen Elizabeth McCall, Scott's 17 year old Sister. The thing is Carman knows about the Supernatural because when her father left Scott wanted to go to his house when their mother was at work but Carman never forgave him to what he did to her family So Melissa has to look around for a babysitter and she found Laura Hale. I'm sorry I'm not really good at these but hopefully you will like it 😉😁