(Vancouver, WA) -- An AMBER Alert is in effect in California for a missing four-year-old girl allegedly abducted by her non-custodial mother in Vancouver, Washington. The California Highway Patrol issued the alert Saturday for Aranza Ochoa Lopez and her 21-year-old mother, Esmeralda Lopez-Lopez. Police believe the two could be headed for Mexico. Lopez-Lopez is believed to be driving a red 2005 Chevy Cobalt with Washington license plate number BLK-1552.