Faerieground: #5 At the Edge of the Woods

Now Soledad knows her true identity as heir to the Willow throne. But there's work to be done in the faerie kingdom. Before they can begin, she and Lucy must tell their parents the truth about the last few days. Armed with advice from their mothers, they return to the faerieground.
But almost the second they arrive on the faerie side of the woods, Lucy becomes ill. And at the same time, Soli learns that the kingdom she leads is on the brink of war. With so much against them, will the two best friends survive in the faerieground?