Obdulia Sanchez from Stockton, south of Sacramento, was booked into Mercer County Jail on charges of driving under the influence and vehicular manslaughter while under the influence, KFSN reported.
The suspect's 14-year-old sister was killed in the crash while another girl of the same age from Fresno, south of San Jose, was badly injured.
Neither were wearing seatbelts, according to Mercer County Sheriff Vern Warnke.
Police say they are investigating a graphic video posted on Instagram that may have been taken by Sanchez prior to and during the fatal crash, according to KTXL.
The footage shows Sanchez singing along to music before the car swerves and overturns in a field.
"Hey, everybody, if I go to f***ing jail for life, you already know why," she can be heard saying after crash and then panning her camera over to her dying sister.
"My sister is f***ing done. Look, I f***ing love my sister to death. I don't give a f***. Man, we about to die," she says before appearing to kiss her sister and then shake her. "This is the last thing I wanted to happen to us, but it just did. Jacqueline, please wake up!"
"I f***ing killed my sister, OK," she says. "I know I'm going to jail for life, all right? I understand that. This is the last thing I wanted to happen, OK? All right, I don't f***ing care at all. I'm going to hold it down. I love you, rest in peace, sweetie. If you don't survive baby, I'm so f***ing sorry. Baby, wake up, baby, wake up, baby."
Sanchez's sister, Jacqueline, was supposed to celebrate her birthday Sunday. A GoFundMe page has been set up to help with funeral expenses.
Why does the system deem it necessary to punish people who make a terrible mistake and will obvioulsy be punished by themselves the rest of their lives...? This kid killed her sister on accident, thats not bad enough, she needs to be in prison too...? And this will do what? Would the dead sister want her locked up?
I could see some form of punishment for killing another innocent person, someone not near and dear to her. But as it happened she did nothing but wreck her car and kill a family member. All detrimental to her.
At some point in life every one of us has done something pretty dumb that really could have killed someone. Whats the difference between her and us? She was not so lucky to get away with it as the rest of us has. How quickly we forget.
But then again, you get a ticket for getting caught speeding, not speeding in itself.