Kylie was sitting in a pickup truck with her cousin, 24-year-old Jeremy Hamborsky, and his girlfriend. She was showing Jeremy her new gun.
According to police, Kylie handed Jeremy the gun, who removed it from its holster and asked her it is was loaded. Kylie said no, the gun was not loaded. Jeremy then "worked the action of the firearm by holding it in his right hand and racking the slide back with his left hand." When the slide returned, the gun discharged one round.
Kylie was hit underneath her right armpit. She died of her injuries.
Jeremy was arrested and charged with involuntary manslaughter.