Traumatised girl, 6, ‘kept as twisted couple’s sex slave in dirt pit alongside corpse of her smothered little sister’

A DERANGED couple allegedly raped a six-year-old girl and held her prisoner beside her sister’s corpse after brutally murdering her mother. Daniel Callihan, 37, confessed to murdering his ex-girlfriend Callie Brunett, 35, in her Louisiana home in June last year before he abducted her two young daughters. Callihan stabbed Brunett more than 50 times, before…