More then meets the eye(a Supernatural/Transformers fan fiction)

In this story a young girl named Theresa Ann Winchester and her brothers fight ghost,demons and many other things from both heaven and Hell but there is something about Theresa that makes her different then her brothers for she has dragon blood in her body and when she gets very angry or someone hurts her brothers she turns into a mighty dragon but when they find a certain GMC topkick Theresa will learn that her brothers have been keeping a very important secret from her and that there's more to her then meet the eye