A central California teenager who livestreamed a crash that killed her younger sister says all of her friends film while driving. 

"We do it all the timeā€”all the time. Trust me, it's like a reflex," Obdulia Sanchez told CBS Fresno in a phone call from jail. "

Everybody does it. Why not?" Sanchez, 18, said that she's sorry about the July 21 crash that killed her sister Jacqueline, 14, and badly injured another teen. Sanchez admitted livestreaming the ride on Instagram in shocking footage that included the moment of the crash and her much-vilified declaration, "I f------ killed my sister ... I know I'm going to jail for life ... I don't f------ care at all." A contrite Sanchez told CBS, "I didn't even know I looked like ... a freaking horrible monster. That was not my intention at all."

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