Free at Amazon and B&N Christmas at Harrington's by Melody Carlson.
Sometimes the best gift is a second chance
Christmas is approaching, and Lena Markham finds herself penniless, friendless, and nearly hopeless. She is trying to restart her life, but job opportunities are practically nonexistent. When a secondhand red coat unexpectedly lands her a job as Mrs. Santa at a department store, Lena finally thinks her luck is changing. But can she keep her past a secret?