The memorial is filled with flowers, stuffed animals, candles and cards where the fatal crash happened Friday night on Lone Tree Way and Indian Hill Drive in Antioch.
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Authorities says speed and slick roads were likely the cause.
Six teenagers were in the car that wrapped around a tree.
Seventeen-year-old Leanna Rubin and 13-year-old Jaia Lightner were killed in the crash.
Lightner attended Delta Vista Middle School where she's being remembered Monday.
Growing memorial in Antioch to remember two teens killed in a crash Friday night including 13-yr-old Jaia Lightner and 17-yr-old Leana Rubin. Four more teens injured. pic.twitter.com/ZDO9UQisgj— Melanie Woodrow (@MelanieWoodrow) January 14, 2019
"Since it's happened, I feel like I'm just in a light fog," said her aunt, Charnell McCoy-Carral.
"Just a good, well-rounded fun-loving pre teen girl that you could just fall in love with," she explained.
The teens had just left a basketball game at nearby Deer Valley High School. Jaia's Aunt says Jaia was in the passenger seat and was not wearing her seatbelt. She was thrown from the car.
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"We're gonna miss her, we're gonna miss her," said McCoy-Carral.
The other teens have injuries ranging from moderate to life-threatening.
"Even as teenagers you don't know you think you know but you don't so you have to listen because in a split second your life will be either taken, you will take a life or you're gonna change a life and there's nothing good that comes out of that," said McCoy-Carral.
On Tuesday night, a vigil will be held at the Walmart parking lot across the street from the memorial at 4893 Lone Tree Way. The Vigil will be held at 7:30 p.m.