A Stamford High School teacher accused of threatening to fail an 18-year-old student if he did not have sex with her and providing him and a friend with marijuana, turned herself over to police early Thursday. Danielle Watkins, 32, of Fort Point St., Norwalk, was charged with two counts of sexual assault, two counts of sale of marijuana and one count of risk of injury to a minor ... A day after the student reported the allegations, police executed a search warrant of Watkins's car during a motor vehicle stop in Norwalk. During the stop, police said Watkins tried to...