IDAHO FALLS, Idaho —  An eastern Idaho woman whose boyfriend impregnated her 9-year-old daughter has been sentenced to 10 years in prison.

Isabel Chasarez, 27, must serve at least one year in prison before she is eligible for parole, 7th District Judge Brent Moss ordered Tuesday at the sentencing hearing.

Chasarez pleaded guilty in August to failing to provide proper prenatal care for her daughter.

Her 38-year-old boyfriend, Guadalupe Gutierrez-Juarez, pleaded guilty to rape in September. He is scheduled to be sentenced Oct. 28 and faces life in prison.

The girl became pregnant at age 9, sometime between Aug. 1 and Sept. 30 2007, authorities say, and gave birth in April.