Convicted of barreling down a road, killing her boyfriend and their friend. mackenzie shirilla apologizing in court. i wish i could take all of your pain away, and i m so sorry. reporter: the fatal crash back in the early morning hours of july 2022. prosecutors say shirilla, then 17 years old, was behind the wheel. surveillance video capturing the vehicle speeding down the street at more than 100 miles an hour. the car jumping the curb and slamming into a business. the judge calling her literal hell on wheels. she had a mission and she executed it with precision. the mission was death. reporter: 20-year-old c russo and 19-year-old davion flanagan found dead at the scene. i lost three children in that crash. not a minute goes by each day that i don t think about my son. reporter: the judge convicted her of multiple counts of