The woman's husband and their 9-year-old daughter and 7-year-old sons escaped from the house and went to the home of relatives nearby.
Hamner said one of the 7-year-old suffered third-degree burns over 70 to 90 percent of his body and was flown to University Medical Center in Lubbock. The 9-year-old suffered minor burns on her shoulder and the other boy was not burned. Both were taken to the local hospital.
Hamner said the boys slept on twin beds and that the bed of one of the boys was on fire.
Firefighters believe the blaze started in the boys' room but they have not determined the cause.
The names of the victims haven't been released.
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