Anger - The Realm Series, #2

Step foot into new worlds and prepare for war. As they make their way into the Realm, Averie and Silas find themselves in a race against time. They must rejoin the Rebellion without being discovered by their enemies. Along the way, they meet a surprising new ally with alluring secrets-and deadly motives of his own. As Averie struggles to find her place and adapt to the world around her, training takes on a whole new meaning when Callen takes over as her teacher.
Using unconventional methods, he forces her to deal with the past and accept what she cannot change. While Silas fights to keep his past from colliding with his present, his lies draw the unwanted attention of an old friend. When everyone Averie cares about is threatened, she is forced to the frontlines, whether she is ready for it or not.