Simple Magic

Harper Green has never truly had a home. Always moving from foster family to foster family, settling down never seemed like an option.
When she's adopted by the kind, somewhat strange old widow from outside of the city, Harper opens her eyes to a world of creatures she never knew existed.
But something dark crawls unseen in the shadows, lingering just outside of Harper's reach.
Harper must unite the creatures of the supernatural realm in order to save both worlds.
... How hard can it be?