Crown of Fire: Forgotten Realms: Shandril's Saga, Book 2 (Unabridged‪)‬

Adventurer on the Run! Once Shandril was a humble kitchen maid. Now she's one of the most powerful magic-users in the land. And a lot of people want her dead. The evil Zhentarim, the powerful Cult of the Dragon—all of them want her spellfire, and they'll kill whoever they must to get it. There's only one thing for Shandril to do: run. With the aid of Elminster of Shadowdale, the Knights of Myth Drannor, her lover, and a determined dwarf, she'll wield her magic for the cause of good. But if her magic becomes too powerful, her friends won’t have a choice.