The Spellsong War: The Second Book of the Spellsong Cycle (Spellsong Cycle, 2)

Anna Marshal is regent of the kingdom of Defalk only a few months after a sorcerer pulled her from her boring life as a music teacher in Ames, Iowa to the world of Erde. With her ability and her integrity she saved Defalk from invasion and became it's regent, now she must defend it against the greedy rulers of neighboring kingdoms who see a weakened state and a possible opportunity.