Family members said the little girl's father, Robert Sanchez, was found guilty last week of several offenses, including gross vehicular manslaughter while intoxicated. During the collision, Sanchez's children were in his truck when it overturned and struck a light pole.
Harbor City rollover crash: Mother demands justice after 4-year-old daughter killed, son injured
Jayda was apparently in the front seat of the truck at the time of the crash.
"We're all here because we love and miss Jayda, and we're glad that she finally got justice," said the little girl's mother, Adriana Rodriguez, during the vigil.
At the time, Sanchez told police another driver had caused the crash and as a result, a $50,000 reward was offered for anyone who had information.
However, the family told ABC7 no other car was involved. Sanchez is set to be sentenced next month.