Innogene Simple and Clean

The main character to the story I'm working on. Innogene (or Inno) is a 10 year old orphan who finally saves up enough coin to buy a guitar. However, that same day, a greedy princess, Sadie [link] , stole powerful relics known as the Rhapsody Gems from the castle.
After a run in with Inno, one of the gems infused with her guitar causing it to become a supercharged weapon of awesome. With the new power in her hands Innogene decides to leave town and retrieve the stolen gems from Sadie. But this proves to not be nearly as easy as it sounds.