Fan Casting Cassandra Cain in Batfam TV Show

Cass is the daughter of assassins and was raised to be the perfect killing machine. She has an innate ability to read body language, but was not taught to understand spoken language. She joins the family in season 3, as they take on the League of Assassins. Although she does eventually learn to speak and read/write, she is more comfortable using sign language. She is approximately 13 or 14 years old, but her exact age is unknown due to her unique upbringing.