Baba Yaga

Older than she looks and powerful beyond measure, Barbara Yager no longer has much in common with the mortal life she left behind long ago. Posing as an herbalist and a researcher, she travels the country with her faithful (mostly) dragon-turned-dog in an enchanted Airstream, fulfilling her duties as a Baba Yaga and avoiding any possibility of human attachment.

Though she looks like a typical California surfer girl, Beka Yancy is in fact a powerful yet inexperienced witch who's struggling with her duties as a Baba Yaga. Luckily she has her faithful dragon-turned-dog for moral support when she discovers that a mysterious toxin is driving the Selkie and Mer from their homes deep in the trenches of Monterey Bay.