Mei the Ruby Treasure Dragon (Dragon Girls #4) by Maddy Mara

We are Dragon Girls, hear us ROAR!

Three new girls are joining the Dragon Girls! Mei, Aisha and Quinn are Treasure Dragon Girls. They draw on the power of precious gems to transform into mighty dragons. Tasked with keeping the Magic Forest safe from harm, the Treasure Dragon Girls must come together as a team, embrace their amazing new abilities and save the day.

Mei must lead her friends in a quest to find the ancient and powerful Forest Book. Inside its pages is the entire history of the Magic Forest. Without this precious knowledge, things will start to go very wrong in this enchanted place!