William DeHayes was showing Hoover his gun collection. While he was showing her his .22 caliber revolver, it accidentally fired and shot Hoover in the head, according to the Hernando County Sheriff's Office.
Hoover was taken to a local hospital and then airlifted to Regional Medical Center Bayonet Point, according to the Tampa Bay Times.
Her unborn child could not be saved, and Hoover died in the emergency room early Sunday morning.
Police are still investigating the incident, but believe it was an accidental shooting, according to the Tampa Bay Times.