When you're 15th in line to the throne, it's hard to make a name for yourself--even if you're a gifted inventor. The nameless princess of Cochem is already ten. Thanks to her fairy godmother's "help", the princess only has 15 days to stop blending into the background. She's got to speak up somehow.
Gail Carson Levine's smart fairy tales
Shannon Halle's The Princess Academy
E.G. Foley's The Gryphon Chronicles