Willa the Silver Glitter Dragon (Dragon Girls #2)

"Willa and her friends have a powerful magic inside of them-they each have the ability to transform into a Glitter Dragon Girl ... The troublesome Shadow Sprites are after the Tree Queen's magic again, and it can only be saved by a special potion. The Dragon Girls must work together to gather all of the ingredients. Willa is leading their quest, but she's scared of what might happen if they don't succeed"--