In book three, Thistle and the Shell of Laughter, the fairy girls are back with Grace, a.k.a. Thistle, in the lead. The Shell of Laughter has been stolen, and Thistle, Dragonfly, and Marigold must help Staid, the shell's elf protector find it before sorrow overtakes the world and laughter is a thing of the past.
These are wonderful books that will help young girls learn to appreciate nature and their own special gifts. Each book has a section at the end that expands on some of the concepts and ideas touched on during the story. For instance, the appendix to Thistle and the Shell of Laughter answers the question of why people are ticklish among other things. At around 100 pages each, they are great for early readers wanting to break into chapter books. Though each book in the series builds on the others, it is not absolutely necessary to read them in order.