PETALUMA, Calif. — The mother of two girls killed last year when the car she was driving plunged into a Northern California river had methamphetamine in her system the day of the crash.

A Sonoma County prosecutor said at a bail hearing Friday that 27-year-old Alejandra Hernandez-Ruiz also had been deemed a negligent driver by the state and had been drinking the day before the crash that killed her daughters, ages 7 and 9, last August.

Hernandez-Ruiz is facing charges of vehicular manslaughter, child endangerment and driving on a suspended license.

The Santa Rosa Press-Democrat reports ( her attorney said there was no evidence the methamphetamine played any role in the crash.

A judge agreed to release her from jail on electronic home confinement so she could receive treatment for cervical cancer.

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