Isabella is a big-city teenager whose life is turned upside down when she moves to a horse ranch in Wyoming to live with her father. But everything changes when Isabella meets Flicka, a wild, jet-black mustang who's just as free-spirited as she is.

my first try at a thunderbird and flicka crossover

This story has a little bit of Flicka 2 and the inheratance Troligy Eragon, Eldest, Brisingr