Police say 53-year-old Elizabeth Ybarra was arrested Friday.
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The crash happened around 6:20 p.m. on February 10 in the area of Amigos Drive & Madsen Avenue.
Ybarra pulled over after the crash and called 911 for help.
Crews performed lifesaving measures on Perez-Aldama, but she died of her injuries at the scene.
Investigators say after a lengthy and comprehensive investigation, it was determined that Ybarra was not paying attention and failed to notice Perez-Aldama in the crosswalk.
She's been booked into Fresno County Jail on a charge of vehicular manslaughter with gross negligence.
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A GoFundMe account has been set up to help the teen's family.
Stay with ABC30 for the latest details on this developing story.
The video above is from an earlier story and will be updated.