The spirit ring

SUMMARY: When her father, a goldsmith and master mage, dies during the siege of their Italian village, fifteen-year-old Fiametta finds her own fledgling magic tested in the ensuing battle against the evil Lord Ferrante. When her father's patron is murdered, Fiametta and her father--a noted creator of enchanted objects--go on the lam, and she gets a chance to test her magical powers. Reprint. PW.