SOUTH JORDAN, Utah — A 15-year-old South Jordan girl who had been missing since late April has been found safe in Colorado Springs, officials confirmed Sunday night. Alisa Petrov, who disappeared on April 21 after being seen on security footage leaving a train platform in Provo, turned herself in to the Colorado Springs Police Department earlier that evening. Sgt. Shaun Becker of the South Jordan Police Department confirmed the teenager was in good health and safe. Details about how Petrov traveled to Colorado or whether she was held against her will have not been disclosed. Utah police cited their policy…