Coimbatore Police on Thursday arrested a 50-year-old woman for allegedly killing her one-year-old grandson. According to a report published in The Times of India, RS Puram police said that the accused, identified as R Nagalakshmi, stayed with her daughter Nandini and her grandson Durgesh. When Nandini noticed that Durgesh wasn't breathing and was lying motionless in the cradle, she immediately …