Beverly Lewis 
Missing (Seasons of Grace Book #2) 

A Painful Absence, a Desperate Heart… Is It Too Late to Find Lettie Byler?Grace Byler longs to uncover the secret that drove her mother to leave the family weeks ago. When all hopes are dashed for such a search, an unlikely friendship leads to a surprising invitation. Meanwhile, the young Amishman Grace thought was courting her best friend takes a sudden interest in her, and Grace’s decision to remain single is challenged even as her determination to find her mother grows.The Heart-Warming Sequel From New York Times Best-Selling Author Beverly Lewis