PROVO, Utah — A week after 15-year-old Alisa Petrov went missing, her family has issued a $20,000 reward for any information that leads directly to her safe return. Petrov, a student at a school in American Fork, was last seen leaving a train in Provo on April 21, 2025. According to the South Jordan Police Department, surveillance footage from Utah Transit Authority shows Alisa exiting the train, sparking concerns about her whereabouts. Family members confirmed the last sighting, saying they were told by a woman who briefly spoke with Alisa that the teenager had asked about traveling to Las Vegas,…