A Pittsburgh-area mother has been arrested in connection with the death of her 17-month-old daughter.Twenty-three-year-old Jhenea Pratt had called 911 in April to say her toddler was unresponsive.Pittsburgh Police say fentanyl, a powerful opioid, was found in the child's sippy cup and her body.Pratt has been charged with criminal homicide and endangering the welfare of a child.------