Mumbai, Sept. 18 -- A 12-year-old boy allegedly stabbed his school principal to death in her house at Shivaji Nagar in Govandi, on late Monday night, after she reportedly scolded him in front of his friends earlier in the day. The victim, 30-year-old Ayesha Aslam Husuyae, was also privately coaching the Class 7 student at her home for the past five years....