"Maybe somebody knows something who rides by, and now they'll know Haley and remember that she was killed by a careless driver, and I hope her memory keeps rolling," Bill Manning said.
Haley's cousin Brittany Szczepanik said she is exactly three years older than Haley, and they shared everything together.
"I definitely would never let anything happen to her unless it was in my hands only," she said. "We grew up together. I watched her grow, and it's hard to believe I'm not going to see her grow anymore. I never expected I would bury my 15-year-old little cousin."
Haley was a sophomore at St. Augustine High School. The St. Johns County School District released a statement saying, "We will have our crisis team at St. Augustine High School as long as needed to support students and staff. We are certainly distressed about this tragedy."
"I just wish whoever done this would just let us all know," Bill Manning said. "This is hard if you've never had it happen to you. You really need to think twice about your kids, 'cause it really hurts."
Visitation for Haley will be held at 10 a.m. Wednesday at Moultrie Baptist Church in St. Augustine, followed by her funeral at 11 a.m. It is open to the public.
The hit-and-run comes just a little more than a week after 43-year-old Randy Miller was hit and killed while riding his bike on State Road 16. That driver didn't stop either.
Anyone with any information on either of these cases should call Crime Stoppers at 888-277-TIPS.