The Exorcism of Bella Swan

What if Carlisle Cullen never became a doctor, What if he followed in his late fathers footsteps and became a priest? It is the year 1967 and Carlisle Cullen, along with his vampire family live in a small town in England. Father Cullen is asked to do an Exorcism on the young 17 year old Isabella Swan, who is believed to be Possessed by the devil himself. Can Father Cullen Save this young soul, or will she be taken over by evil?