The sister of 11-year-old Linda O'Keefe, who was murdered 45 years ago, says she is relieved that an arrest has finally been made in the slaying. "I never ever really thought the day would come," Cindy Borgeson told Inside Edition. She was 18 when her sister vanished on her way home from school in Newport Beach, California, on July 6, 1973. Linda's body was found the following morning in a nearby nature preserve. Using DNA evidence, investigators arrested James Neal, 72, earlier this week.