Everlastingly — Michelle M. Pillow

How do you find something that you don't know is lost? 

On the run from her attackers and battered by a winter storm, Maura O'Brian battles her way through the snow, desperate and alone. She stumbles upon what she believes to be a secluded, abandoned farmhouse where strange voices are be more frightful than what awaits outside. The signs keep pointing to the same person--Jack. His very name fills her heart with such intense longing she'll do anything to find him.
 
 Is Jack real or simply her fevered imagination hoping for a miracle?