The Watermight Thief (The Fire Queen's Apprentice Book 1)

"The Watermight Thief will have you sitting on the edge of your seat from start to finish. This book is simply a must read for fantasy lovers!" -She Who Breathes, Reads
Welcome to Pendark, a city of murky canals, brutal gladiator fights, and sorcerers who feud over access to the silvery magical substance known as Watermight.
Tamri is a scrappy magic thief who’s trying to get her grandmother out of this festering swamp of a city. But when a quick score involving a dragon goes wrong, she’s shipped off to a distant mountaintop kingdom where the legendary Fire Queen is starting a school for magic wielders.
Tamri's not just going there to learn. The King of Pendark suspects the Fire Queen is up to something more dangerous than training young wielders, and he orders Tamri to find out the truth. If she fails, neither she nor her grandmother will survive the school year.
Be sure to check out the other books set in the world of The Fire Queen's Apprentice:

Steel and Fire
1 - Duel of Fire
2 - King of Mist
3 - Dance of Steel
4 - City of Wind
5 - Night of Flame

The Fire Queen's Apprentice
1 - The Watermight Thief
2 - The Thunderbird Queen
3 - The Dragonfly Oath