Wish: Dream's Beginning — Deby Adair

Headstrong and feisty, Rielle is lost, and she knows it. When she and the faithful Pud find themselves hopelessly alone in a wild landscape, they drift into an untamed forest.
Rielle has been in plenty of pickles, but the hairs rising on the back of her neck tell her that this time, things are going to be very different!
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Where Rielle comes from, nobody even talks about unicorns, let alone fabled forests, mighty First Ones, shapeshifters or lands that don't exist on maps. But when Rielle's parents suddenly disappear, Rielle decides to go and look for them. Nothing has prepared her for the things to come. From wandering alone in unknown places to finding the treasured and faithful Pud, she stumbles unknowingly into a land called Wish, where, it seems, anything is possible. And there she unwittingly unlocks a long-lost tale of unicorns that unravels from the mists of time.