Thongkham Uppahad said she left her phone charging in her bedroom.
Firefighters took about half an hour to control the blaze at the two-storey wooden house in Ban Nong Tor village in Tambon Na Kha of Khon Kaen's Manja Khiri district.
No one was inside when the fire broke out. A neighbour told police that she heard an explosion and saw the fire start.
Forensic police have yet to check the cause of the fire.