The Serpent's Shadow by Mercedes Lackey, 2001 DAW Books
England is monumentally different than India and Maya Witherspoon finds it both a blessing and a challenge when she flees her mother's homeland for her father's. Something is chasing the young woman and her Indian household across continents. Maya hopes that hiding among the working poor in London will keep her hidden from the unknown pursuer.
Peter Scott is an Elemental Master of Water. His club is a center for the men who protect England from magical threats. He is assigned to find the new and mysterious source of Earth Magic in the depths of London. He discovers the female doctor and her entourage hiding behind a unique shield set by an obvious novice. Peter and his fellow masters are surprised by the shield itself, but the stodgy old men have no inclination to help Maya learn how to manage her power.
Better to ask forgiveness than permission--Peter takes it upon himself to teach Maya the basics of western magic and the mastery of Elements. She is powerful but faces opposition at every step as she pursues her goal to be independent and help those who otherwise wouldn't be helped, and to create a home for her little family. It is Peter and his connections who support her and her dream when Maya discovers who and what have been hunting her.
The Serpent's Shadow sets a modern young woman in Edwardian England. Her race, gender, and professional occupation are all challenges to the status quo and Maya's passion for helping others earns her just as many friends as her vocation earns enemies. Magic cannot solve all of her problems or grant her wishes, yet Maya knows it will help her as a doctor.
Lackey creates a complex mirror of Edwardian England enriched with regional magics as elaborate as the cultures across the world. This is the first of an extensive series exploring retellings of classic stories.
