Amaranthine: Song of the Mountain

https://www.barnesandnoble.com/w/amaranthine-david-yang/1149602810?ean=9798279602889

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Tiki Soyokaze is an orphan girl who is determined to devote her life to the pursuit of apothecary and healing in the magical land of Erusneray.
But her best friend, the gentle, frail Ruth, suffers from a painful, chronic, and fatal condition.

So to help her survive, Tiki embarks on an adventure to be accepted into a prestigious Magic Academy and learn the secrets of the Song of the Mountain Ruth hears in the desperate hope a cure can be found and her only friend saved.