Vanishing Throne: Book Two Of The Falconer Trilogy

When we last saw her, Aileana Kameron, the Falconer, disappeared through the fae portal that she was trying to close forever. When she escapes and reenters the human world, she finds her beloved city—indeed, the entire world—has been destroyed, and the fae world itself is slowly dying. Somehow Aileana is the key to preserving both worlds—but how?