The Brazen Blade — Billy Wong

Rousing fantasy adventure with a butt-kicking heroine. When her sickly brother is unable to attend military school as planned, young noblewoman Kathryn goes in his place. She impresses instructors and peers alike with her sword skills, and gains notoriety among them along with the nickname Kath the Blade. When one of her new friends is targeted by mysterious assassins and flees the school, she decides to follow in order to protect him. But even confident Kath is little prepared for the monsters, mercenaries, assassins, and scheming masterminds who stand in their way. A full length novel.