In September 2009, 19-year-old Guadalupe Colemenares and two others were walking on a marked crosswalk at Sixth and Lorena streets in Los Angeles when Vega crashed into them.
Colemenares was pronounced dead at the scene and a second woman suffered serious injuries, according to the district attorney's office. The third pedestrian was not seriously injured.
Prosecutors said that Vega fled the scene immediately after striking the three pedestrians. Los Angeles Superior Court Judge Drew Edwards ordered Vega to appear for sentencing on Nov. 2.
She faces a maximum sentence of five years in state prison.
