Silver Lining — Susan Hardy

EVERY DARK CLOUD...
A wealthy heiress and successful child psychologist, now Katherine Spencer doesn't remember anything: not the tornado that sent a tree hurtling towards her car, not the blow to her head, not even her own name. All she knows is that from the moment sexy Kansas farmer, Tom Weaver, and his winsome fire-year-old son, Jamey, took her in, she's felt strangely at home. And when Tom wraps her in his strong arms, she starts to believe that is just where she belongs.

...HAS A SILVER LINING
Tom didn't think twice about rescuing the tornado victim--whom Jamey has dubbed Dorothy after the heroine of the Wizard of Oz--nor did he hesitate to offer her a place to stay. Still smarting from a brutal divorce, he's not prepared for the rush of feelings the mysterious beauty inspires in him, of his yearning to keep her by his side. And yet, Tom realizes that he should help the woman he loves return to her old life...if only his heart would let her go.