I also noticed that the WTS says that David was spared because he was repentant....but where is there any mention of Bathsheba's repentance?
Bathsheba was raped. About what should she repent?
She was new wife of a soldier, so she was probably about 13-14 years old. David was in his 50s at the time. She was summoned to the palace, and David does the wild thing with her. She is a young female in a strict patriarchy, AND no one denies the King.