Thestral's Calling: Calista Snape Volume III

Third in series. Snape's daughter fic. After graduating from Hogwarts, Calista Snape's plans include a new career at St. Mungo's, working with the Committee for Experimental Charms, and building her relationship with her boyfriend, Gerald Boot — but shadows and blood still follow her and her father, as the Second Wizarding War approaches. AU, but all in-character; well-written.