A 39-year-old grandmother accused of selling heroin on the streets of a Los Angeles suburb with her 11-year-old granddaughter as a lookout has been arrested on drug and child endangerment charges, police said on Tuesday. Undercover officers watched for two weeks as Martha Gutierrez Novas sold heroin at a bus stop in Long Beach, south of Los Angeles, clutching a brown and white Chihuahua and often with her granddaughter at her side, a police spokesman said. "The granddaughter acted as a lookout, standing at the corner of the building looking, I assume, for police officers," said Sgt. Paul LeBaron, a...