Lady of Pompeii — Emma R. Iadanza

Antonia is a privileged fifteen-year-old girl living in ancient Pompeii. When Mt. Vesuvius erupts in 79 AD, Antonia is killed, only to wake up alive and well in modern day France. The goddess Isis has saved her, made her immortal and set her on a quest to save the world from Apophis, the god of chaos. Traveling the world and posing as a touring classical musician, Antonia must find the others like her; teenagers from all across time and charged with this special purpose. Armed with the power and protection of the gods, they must train and learn to work as a team before everything they love is destroyed.