The Winds of Heaven — Judith Clarke

Clementine thinks her cousin Fan is everything that she could never be: beautiful, imaginative, wild. The girls promise to be best friends and sisters after the summer is over, but Clementine's life in the city is different from Fan's life in dusty Lake Conapaira. And Fan is looking for something, though neither she nor Clementine understands what it is.
Printz Honor Winner Judith Clarke delivers a compassionate, compelling novel with the story of a friendship between two young women, and of the small tragedies that tear them apart from each other, and from themselves.