More ideas for my tagline:
1. Teenagers sometimes make idle threats, but not Gwenn-she has a wrathful Goddess and an army of Northmen waiting to overthrow her mother, Queen Katrione.
2. Gwenn has a goddess inside her, an army of Northmen behind her and a killer sword in her hand-now all she needs is… revenge.
3. Gwenn Faircrow must choose between the awesome powers bestowed by a tyrant Goddess and the freedom offered by a gentle-hearted slave.
4. A cruel Goddess has given the young warrior Gwenn Faircrow awesome powers, but it is a wandering monk who helps her understand freedom.
Actually, #2 is based on a comment made by my MIL, Jill and is my current favorite. Short, sweet and to the point.