Crystal blade / Kathryn Purdie.

"Sonya and Anton may have brought about a revolution, but can they protect their homeland--and their love--with so many forces threatening to tear them apart? The empire has fallen, Valko faces trial, and Sonya is finally free from her fate as Sovereign Auraseer. But Sonya's expanding abilities are just as unstable as the new government of Riaznin. Not only can she feel the emotions of others but, unlike most Auraseers, she's learned to make others feel what she's feeling as well. And with her relationship falling apart, Sonya isn't immune to her power's sinister temptations. Now, as Sonya fights to contain her own darkness, she senses a new evil lurking in the shadows of the palace. Someone from Sonya's past has returned seeking revenge--and she won't be satisfied until Sonya has suffered for her mistakes"--Amazon.com.