HOUSTON (Reuters) - No charges will be filed in the case of a 9-year-old boy who fatally stabbed a 2-year-old girl in a Texas home where a teen-ager was babysitting 12 children, Dallas police said on Tuesday after an investigation. The stabbing occurred on December 22 in a home in southeast Dallas where a 15-year-old was left to supervise at least 10 siblings and 2 other children, including the victim. The toddler, Damya Jefferson, was stabbed twice in the chest by a 9-year-old boy who lived at the house, according to published reports. No charges will be filed against the...