Believing In Horses by Valerie Ormond

First the move to Maryland. Then Dad's deployment to Afghanistan. Sadie is in trouble. Then she gets Lucky, a new, young horse who proves to be a handful. But that's just the beginning. Together they encounter horse thieves, Maryland storms, and unwanted horses destined for auction and uncertain futures.Sadie makes it her personal mission to save the horses. Along the way, she meets other people who are dedicated to rescuing horses. She also learns some people in the horse industry are driven by greed. And, she's only twelve.