Deputy District Attorney S. Kelly Cromer says Barker was to be arraigned Monday at Antelope Valley Court in Lancaster.
Police said Stacey Barker, 24, initially claimed the child was kidnapped on March 18, telling detectives someone knocked her out while she was putting her daughter Emma into her car in Lancaster. Barker claimed when she woke up, her daughter was missing.
Barker later recanted her story and said Emma died in an accident.
Emma's body was found in tall grass a few blocks from Interstate 5 in Sylmar.
The Associated Press contributed to this report.
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