Light at Winter's End by Julia London
Holly Fisher opens her door one day and finds her estranged sister Hannah standing there with a glassy look and her nine-month old baby on her hip. Before Holly knows what is happening, Hannah has left her baby with Holly and disappeared. Three months later, fresh out of rehab for addiction to painkillers, Hannah shows up sober, contrite, and wanting her son back. But Holly is in love with the baby and not willing to give him up to the mother who abandoned him.
Into the middle of this extraordinary conflict between two sisters walks a lonesome cowboy, Wyatt Clark (Summer of Two Wishes) who knows a thing or two about childcare and fractured families. He’s had his own troubles and has stayed away from women the last couple of years, but he can’t resist Holly and the baby. But when Holly is delivered a devastating blow and returns the baby to his mother, Holly is too distraught to continue her relationship with Wyatt. It will take an extraordinary turn from Hannah to bring Holly and Wyatt together so that they both may find the happiness that has eluded them.