Breaking free [sound recording] / Lauraine Snelling.

Enhanced descriptions from Syndetics:

When an accident brought Maggie Roberts unimaginable tragedy, she found herself in prison grieving for the loss of her family and her old life and facing the daunting challenges of threatening fellow inmates. During the course of her ten-year sentence, she coped by keeping to herself and avoiding interacting with others. But in her last few months inside, when given the chance to work with retired Thoroughbred horses, she found a renewed purpose in life. Now she's faced with the transition back into society, starting over yet again and alone in the world.

Gil Winters is a single father seeking a new form of therapy for his wheelchair-bound son, Edward. Confined to his own prison of doubt and distrust, he still struggles daily with the memory of being abandoned by first his mother and then his drug-addicted ex-wife. But as he gets to know Maggie during his son's therapy sessions with her horses, the issues of trust and old wounds that haunt both Maggie and Gil begin to fade.