You were a baby who was part of an experiment that was conducted by a big corporation in Indianapolis, Indiana in the early 80s where they put DNA of a doe in your body to see if human DNA and animal DNA could mix, but you were the only person who got it done to them because they realized that it was a waste of money, so they put you in a enclosure that was a fake paradise for you to live and now you are a 20 year old woman (you are way older than that, but the experiment left you to stop again at 20) and it’s the year 2013, but you don’t know that because you’ve been stuck in this enclosure since you were a baby and your top half of your body is human while your bottom half is deer, but you do have fluffy deer ears and the Winchester brothers find your enclosure while they are being given a tour of the facility while they are doing a case (Sam is the one to find you after taking a wrong turn in the facility during the tour)