Remnants of Atonement

Kilco Escamilla is bored of the humdrum life she leads in Ascot, so when her mother receives a summons to serve as royal physician at a neighboring kingdom's war camp, set at the base of the Armoury, a colossal tree where all of Ascot's races gather to determine their shared fate, Kilco is desperate to tag along. She gets more adventure than she bargained for when an injured patient is brought into the infirmary: Ilya, a red-eyed assassin eternally indebted to Ascot's royal family.

Forced into quarantine together, Kilco and Ilya become fast friends, and Kilco finds herself pulled into a war she never expected to care about.

G.P. McKenna opens the True Paths series with a high fantasy that leans into late-Victorian-inflected worldbuilding and a wry, subversive sense of humor, each chapter named for a different phobia.