Shadow Lost - D. K. Holmberg

Carth has forged the accords, but she fears the tenuous peace, and travels throughout the north expecting the Hjan will violate it, all while knowing it is nothing more than an excuse to avoid another task she should complete.

When she finds evidence of attacks along coastal villages, Carth wonders if peace has already failed, though not because of the Hjan. Discovering the reason for the attacks leads her to an old master who finally coaxes her to search for answers from her past. If she fails, so will the peace accords between Ih and Lashasn.