Bakersfield Police say back in June, Maya Hernandez left her children, ages one and two, locked in her vehicle for two-and-a-half hours.
Prosecutors allege the 20-year-old left the boys alone while getting a cosmetic procedure.
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One-year old Amillio Gutierrez died, but his two-year-old brother survived.
Hernandez is scheduled to appear in court on August 29 for a hearing. Her trial is scheduled to start on September 8.