"Traveler (Seeker Book Two)" by Arwen Elys Dayton
"For readers of Game of Thrones and Marie Lu: Traveler, the sequel to Seeker.
Quin Kincaid is a Seeker. Her legacy is an honor, an ancient role passed down for generations. But what she learned on her Oath night changed her world forever.
Quin pledged her life to deception. Her legacy as a Seeker is not noble but savage. Her father, a killer. Her uncle, a liar. Her mother, a casualty. And the boy she once loved is out for vengeance, with her family in his sights.
Yet Quin is not alone. Shinobu, her oldest companion, might now be the only person she can trust. The only one who wants answers as desperately as she does.
But the deeper they dig into the past, the darker things become. There are long-vanished Seeker families, shadowy alliances, and something else: a sinister plan begun generations ago, with the power to end the legacy forever.
The past is close. And it will destroy them all."