The Fires of Farsinchia. Waterspell, #6

Will it all end in flames?With the revival of magic in the world of Ladrehdin, an ancient foe reawakens. Lady Karenina is called home to wield her wizardry against a power far older and deadlier. Will she survive? Who will hear her call for help? In this second sequel to the original Waterspell quartet, Nina returns to the Ore Hills, summoned from across the void to face peril alongside her brother Galen and niece Jacca.
This time, the threat is existential. Nina will discover that her great Gift of water-magic does, in fact, have its limits. Love, however, is eternal, and true friendship is boundless. The Fires of Farsinchia concludes the further adventures of Lady Karenina of Ruain, footloose eldest daughter of House Verek. It's a tale of loyalty, humility, and selflessness in the face of overwhelming odds. Who can you count on to always be there to save you from drowning when you're in over your head?"A marvelously complex and captivating fantasy series." -The Published Page(Waterspell series finale)