Katherine was rushed to the local hospital and airlifted to Regional Medical Center Bayonet Point. She died of her injuries.
Katherine was five months pregnant and an effort was made to save the unborn child. Physicians removed the fetus from his dying mother but he was pronounced dead a short time later.
Katherine is survived by her 6-year-old son Nicholas.
Police are still investigating the incident and no charges have been filed against 33-year-old DeHayes.