Jason Mendes headed to Melissa and Sean Deloich and their six children after a heated dispute between Mendes and Sean Deloach, according to a statement from the Hawkster Police Department.
Then he came back and went back into the family, police said.
"The car hit with such force that it continued in the building, severely damaging the front of the building," the police statement said. "Then the driver supported the car and headed for the second time when Deloach and his family hit.
All family members were injured and transported to a hospital. Melissa Deloach, the 32-year-old mother, eventually died of her injuries. Father Sean Deloich and three of the couple's children were later moved to another hospital where they were treated for serious but not life-threatening injuries.