Don't judge a book by its cover

Casey is your average teenager. Alright I lied. Casey is your seemingly average teenager. She is 5'6" neither tall nor short. She has shoulder length blonde hair and pretty green eyes. She lived with her mother and Step-father. Key word did. So, wondering why she is only seemingly average? Casey can shape-shift into animals. It typically happens when she gets startled, angry, or if she wants to. When she accidentally reveals her secret, can she keep herself from getting captured and used for laboratory tests? Read and see what happens.