CHAPEL HILL - Even after she went to Charlotte for school, Irina "Ira" Yarmolenko spoke to her mother, Yelena, almost every day. On May 4, the pair made plans for Ira to return home to Chapel Hill that week. She had just turned 20 but couldn't come any sooner because of exams. Expecting to hear from her the next day, Yelena Yarmolenko instead got a knock on the door at dinnertime from a police officer: Her daughter's body had been found on the banks of the Catawba River next to her car. "I don't think what I'm living is called...