Authorities on Friday revealed footage showing how the parents of a 3-year-old Utah girl abused her before she died, the Salt Lake Tribune reports. In July, the girl, Angelina Costello, was found dead in her family’s home. Prosecutors have charged her parents, 23-year-old Emile and 25-year-old Costello, with first-degree aggravated murder. READ More: Police: Utah parents …