To Heal a Heart (The Masonville #2)
Jana Richards

Blair Greyson moves to Masonville to look after her ailing grandfather and give her rescue horses a home. Right away she butts heads with a surly former Marine. Despite a rocky start, they come to an agreement: Blair will board Garrett's rescue horse and he'll help with repairs around her farm.
Garrett finds purpose working with Blair—and falls in love with her. But she's hiding a secret. Can she forgive herself and accept Garrett's love, or will she let guilt and regret continue to rule her life?