Child of Mine (2005)

An Alberta small-town police chief officially finds no suspect in the bloody stabbing to death of 'working girl' Jane McGill. Her daughters are adopted two years later, through his friend Alvin, by a London couple who don't qualify yet for a correct procedure. Grace, the eldest, behaves viciously to Tess Palmer, who gave up her psychotherapist job to become their full-time mother, yet as sweetly as her little sister to new father Alfie Palmer, a struggling entrepreneur, but aggressively too toward his son Charlie, from an earlier marriage, and his grandmother. When the strain on the marriage becomes unbearable, Tess takes Grace to Alberta to examine suspicions about a dark past arisen during written overseas contacts.