The three teenagers, in separate police interviews, told investigators that they had been walking in a neighborhood off Robertson Road when they heard what they believed to be firecrackers.
A 46-year-old Cheyenne woman has been charged with involuntary manslaughter and aggravated assault in the stabbing death of 45-year-old Jennifer Pratt.
Sharon Hinkle has agreed to testify against her alleged co-conspirator, William Mason Quillen, who is charged with two counts of aggravated assault and one count of aggravated burglary.