In her fourth fantasy about the land of Bayern, Hale has created a strong stand-alone companion to The Goose Girl (2003), Enna Burning (2004), and River Secrets (2006). Forest Born centers on Razo's sister, Rin, and her special abilities. The struggle that she goes through as she begins to recognize her talent of persuasion and her elemental connection to the forest brings the typical fantasy themes of good vs. evil to a place that makes them very personal.

Rin discovered as a child that her words could be powerful. But that power left her feeling confused and wrong. Since that time, the wrongness has curled up like a snake inside her, making her doubt whether she can ever find peace. Rin encounters Isi, Enna, and Dasha from the previous Bayern stories and through them she finds hope; perhaps what makes her different could be a blessing, if she is able to find balance in her gifts. Lurking throughout the story is the tumultuous backdrop of diplomatic negotiations and threats of war.

Everything finally comes to a head when Isi's nemesis from Goose Girl returns and kidnaps her son. All four women need to work together to defeat Selia, who has been completely corrupted and consumed by her people-speaking power of persuasion.