The princess curse

Reveka would like to solve the Twelve Dancing Princesses mystery, but she's not one of the princesses or a suitor. She's just an herbalist's apprentice who'd make good use of the monetary reward offered to not-suitors who tackle the puzzle. The Princess Curse is from a rare outside perspective and all the herbalism is pretty neat.

Unfortunately none of the characters have much personality. Everyone has the same voice and the only characters with any personality traits at all are relatively minor characters. And only two come to mind.

A twelve dancing princesses retelling, magical and mysterious settings, and a unlikely heroine- it gets better and better with every page.