Fira and the Full Moon (Tales of Pixie Hollow, #6)

Fira is a take-charge light-talent fairy, who never asks for help. So when the mining-talent fairies set off on their monthly expedition into the underground caves, who lights the way? Fira, of course. But she's exhausted, and the deeper the miners go, the more her glow flickers and fades. Fira's full moon may turn out to be her darkest hour . . .