Complex sentence: Cassandra's backstory presents her as the daughter of assassins David Cain and Lady Shiva, she was deprived of speech and human contact during her childhood as conditioning to become the world's greatest assassin.
Split into simpler sentences: Cassandra's backstory presents her as the daughter of assassins David Cain and Lady Shiva. She was deprived of speech and human contact during her childhood as conditioning to become the world's greatest assassin.