Jennifer A. Miller and her two children were sleeping in a car in the parking lot of a Walmart when the fire started.

BOISE -- A Boise woman whose daughter died in an April car fire has pleaded guilty to two felonies.

Jennifer A. Miller, 31, admitted to two counts of injury to a child Thursday.

The fire was sparked by a portable heater as Miller, along with her 4-year-old daughter and the girl's younger sibling, slept in the car in a Walmart parking lot April 10. By the time firefighters arrived, flames had engulfed the car.

The 4-year-old, Alliee Rose, died in the fire. Both Miller and her younger child were burned, and were taken to a local hospital for treatment.

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Prosecutors say Miller was under the influence of methamphetamine when the fire broke out, and had been unsafely using the portable heater to keep her car warm, despite manufacturer's warning about using it inside a confined space.

An additional count of felony injury to a child - related to having drugs near her children - and two sentencing enhancements were dropped as part of the plea agreement.