The Utah girl who was murdered by her own mother during a trip for a cheerleading competition in Las Vegas has been at the center of a bitter custody dispute that dragged on for years, according to documents shared with Us Weekly. Tawnia McGeehan and her ex-husband, Brad Smith, began battling over their daughter, Addi Smith, back in 2020, when the 38-year-old mother briefly lost custody of the girl - then a toddler. McGeehan lost custody of Addi when the court determined she took deliberate actions to try to alienate the girl from her father.