ST. JOHNS COUNTY, Fla. -- On the side of Kenton Morrison Road, a little boy hugged his family members Monday.
He was Haley Smith's little brother.
"It's hard to explain to him because he doesn't understand," Bill Manning said. Her stepfather, but he said he had raised Haley for nine years. He had to hold back tears talking about her.
Manning, Smith's mother, and other family gathered where the 15-year-old was hit by a car Saturday night around 8:30.
St. Johns County just installed a memorial marker Monday with her name on it at the site.
"I understand it's a process that usually takes a little longer," Jo-Lee Manning, Haley's mother said. "So that lets me know Haley was special to a lot of people."
The driver who struck Smith took off after hitting her Saturday night - and has not been found. This case is another in a string of unsolved hit and run investigations in St. Johns County in two years.
Less than a mile away - an unknown driver hit Randy Miller on his bicycle on State Road 16 earlier in November. Almost a year ago exactly - Christian Schroom was riding his bike just east of the Bridge of Lions - when a car hit and killed him and left.
And before that, in 2011, Bryan Wrigley, 23, was riding his bike on County Road 214 when a pick-up truck hit him and took off.
"I'm baffled," Mandy Wrigley said Monday. She is Bryan Wrigley's mother who now lives in South Carolina.
She said, "Why are people driving around St. Johns County that obviously don't know how to drive or they do not care about human life?"
The billboard asking for information in her son's case still stands - pleading for help.
"It's heartbreaking. I know what these families are going through," Wrigley noted.
Haley's family has hope their teenager's mystery hit and run will be solved.
"I absolutely have hope it will be solved," her mother said. "I'm not angry."
"You can run from the law about all this," Bill Manning added, "but you can't run from God."
The St. Johns County Sheriff's Office says it did retrieve the mirror to the truck. It was found at the scene, according to Commander Chuck Mulligan. He said investigators are working to identify its make and model. Currently, the only description they have is a small, gold pick-up truck.