Demetria D’Antignac, 31, was in critical but stable condition, hospital spokeswoman Barclay Bishop said.
Firefighters responded to D’Antignac’s Petersburg Circle apartment about 11:20 p.m. They broke down the door and found her collapsed near the back door, said Battalion Chief Danny Kuhlmann, of Martinez-Columbia Fire Rescue.
A smoke detector was still going off when firefighters arrived, Kuhlmann said.
A neighbor who had gone outside saw the fire in the Petersburg Place Town Homes off Old Petersburg Road and called 911.
Investigators for the fire department and state Fire Marshal’s Office believe a cooking fire started in the kitchen, but can’t be sure until they speak with D’Antignac, spokesman Jeremy Wallen said Friday.
The rest of the apartment was damaged by smoke, and adjoining units had minor smoke damage, Wallen said. Four other units were initially evacuated, but those residents returned to their homes after the fire was extinguished.
Firefighters initially were told two children also were in the burned unit. They later learned the children were staying with a grandmother, Wallen said.