“When I’d first explained to Father that I was taking her in and raising her as my assistant, he’d made me promise two things. The first was that I had to take full responsibility for Tarte’s upbringing. My father was not going to involve himself in her education. The second was that because I was going to have to share top secret Tuatha Dé knowledge with Tarte, I’d have to be the one to kill her if she ever went rogue.”