. >> reporter: police say 18-year-old adelia sanchez live streamed this ride through central california while she was heavily intoxicated. swerving past that black suv, her 14-year-old sister and another teen in the car with her. but then the ride turns deadly. [ screaming ] police say the 18-year-old sanchez began drifting off route 165. then she overcorrected. the car tumbling. the three girls inside screaming. >> please wake up! >> reporter: shockingly with her sister jacqueline lying lifeless she continues to live stream. >> i [ bleep ] killed my sister. okay? i know i'm going to jail for life. >> it's very disturbing to us because the callous nature of her actions both leading up to this tragedy and in the immediate aftermath. >> reporter: sanchez has been charged with gross vehicular manslaughter while intoxicated and also driving under the influence. she's being held on a $300,000 bail. if it is determined that it was at least a contributing factor to the accident that she was on her phone and she was showing this live, she could be charged with something up to manslaughter. that