There is a problem with the attempted murder story. Mary Capron's father was Nathan Capron. Her mother Sally Beers remarried Joseph Aumond in Prescott County in 1834 after Nathan's death. Sarah Capron is living with Joseph Aumond & Sally in 1851 census. Therefore Sarahs father was long gone before Sarah got married. Sally & Sarah are listed as Presbyterian but her new husband Joseph Aumond is Catholic. Could it be that it was Sally's father Peter Beer objected to Sarah's mothers marriage to a Catholic? Perhaps Sarah had a brother Nathan that objected? I believe that Sarah Capron was born in Quebec. Have you checked the Drouin records? Presbyterian records for Quebec towns close to Prescott County?