Alchemy's Daughter, book two of Osborne's Alchemy Series, tells the story of Santina Pietra--the original owner of the Book of Mysteries. As a precocious twelve-year-old, Santina learns about alchemy and herbal remedies from Friar Calandrino. When she comes of age, she is expected to set aside her interest in the Great Work and marry. Though she tries to fulfill her duty, she cannot easily deny her passion for alchemy or those who seek her skill as a healer.