Killed by Gabriel
Basic vampire abilities
Her physical age was 2. No one in the British Coven except her creator, William, new her existence, and kept her existence a secret. She became William's adoptive sister. Through the year the guilt of creating such a crime weighed on him, after after Catlin's newborn year, Joseph, with his gift, found out about the child and told Gabriel about her. Gabriel was enraged, but he spared William only because of his gift, but disposed and killed Catlin as her existence was a crime.