From the series:
Nine Kingdoms
Reign and Reckon (Nine Kingdoms Book 3)
About
She chose the crown. Now she'll pay the price. In front of two thousand strangers, three disgruntled friends, and one furious dragon, Cass becomes queen of Sava. When the nine kingdoms convene for a summit that could secure peace or ignite war, she's caught between ruthless Fae courts and desperate human rulers. Roark is there too—watching her with eyes that remember nothing.