It ends with Knight
(Book)

Until his untimely death, Nena's mentor was the backbone of the Tribe. With his leadership position unfilled and despite the Tribe's newfound misgivings about her, Nena has stepped into a new role she never wanted. Politics is an entirely new venture for her, and now one of the Tribe's own has been kidnapped, forcing her back to her origins as an assassin. But the only person qualified for such a rescue mission is Nena Knight and a new team whose trust in her continues to waver. Determined to harness the power of her former role to succeed in her new one, Nena must also face what she left behind. Old fears, resentments, and anger threaten the precarious hold Nena has on her new life as she realizes that the past and the people from it are never far behind.