The Winchester Girl

Being the daughter of John Winchester isn't exactly easy for 17 year old Mary kate. She has two older brothers, Dean and Sam Winchester. After Mary kate's mother is murdered by a demon in Mary kate's nursery, her father trains her, as well as her brothers like warriors because he knows that there are more demons out there. So what happens when John Winchester disappears after going on a hunting trip. Will Mary kate and her brothers be able to find him? Will it be to late? Is this more than the Winchesters can handle?