Guardians of the Garden - Theresa Pocock - Bog

At the heart of the backward and isolated town of Edenia lives a secret kept safe for six thousand years.
All that stands between this secret and the end of the world are the Guardians of the Garden.
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The powerful Guardians of Eden forsake all to protect the Tree of Life from everyday mortals, but one of them has developed a new and invasive power which, even in a town of magical beings, makes her a freak. Miriam wants nothing more than to live in the "real" world where her powers will disintegrate, but all her dreams for escape are frustrated when a former Guardian returns to Edenia. When the secretive newcomer threatens the Garden of Eden from within, Miriam must transcend her resentment of her powers and become the Guardian she was always meant to be.
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Seth Johnson and his family leave Cairo to come to America for two reasons: to escape the rapidly growing dangers of war-torn Africa and to provide better medical care for his dying sister. However, when they arrive in Edenia instead of a cancer treatment center, Seth realizes his parents have betrayed them all and his sister''s life is now his responsibility. Desperate, Seth will do anything to save her.

*This book is based on the folklore surrounding the garden of eden, which exists in all ancient cultures. And though the Edenians have a certain culture of morality, any correlation or similarity to any religion is happenstance.