The family was transported to StoneCrest Medical Center where the boy was pronounced dead. The mother was treated for an ankle injury and later released.
Family members said Clifton was involved in sports, Boy Scouts and served the community.
"Clifton was a sweet young man who was strong in his faith and had a smile and a joke for everyone," they said in a statement.
The family attends St. Rose of Lima Catholic Church in Murfreesboro and the 8th grader, who was home schooled by his mother, was very involved in the church's youth group.
"Pretty much anytime we had a volunteer opportunity you knew Clifton was one who was always going to show up for it," said Brandon Quigley, the victim's youth director.
Friends said the family was on their way to a church event when they were struck. They tell News 2 Clifton was just finishing changing the tire at the time.
Another motorist who saw the driver, Wilson, flee the scene, followed her and contacted authorities.
Officers took Wilson into custody a short time later at a business park off Harding Pike and Metroplex Drive.
She was charged with leaving the scene of a fatal crash and failure to give immediate notification of a fatal crash.
She was released on bond but rearrested Friday morning on charges of vehicular homicide for killing Clifton and aggravated vehicular assault for striking his mother.
News 2 has learned that at the time of collision, Wilson was taking her passenger, Jennifer Hernandez, to AMC of Nashville, an addiction medicine care clinic on Metroplex Drive.
In a brief encounter Thursday night, Hernandez told News 2 their car was hit by another vehicle. That detail, however, is not noted in the Tennessee Highway Patrol's traffic report.
"I don't know what happened," Hernandez said. "They won't tell me s^$#. We didn't hit a child. A f*^$!@# truck hit us. A truck hit us and we went spinning and they f*%$&# flew off. We did not hit [anyone]. I don't know [anything] about anyone getting hit."
News 2 spoke with one of Wilson's neighbors Friday. Kimberly Bailey said she was shocked when she heard about the accident.
"I thought, 'Oh my gosh. She really did that? Ran over that poor 13-year-old little boy?' I was like, 'Oh my gosh.' I almost cried because I love kids anyway," explained Bailey.
Wilson is being held without bond. Bailey says she feels better knowing that her neighbor will not be behind the wheel.
"I would be anxious, scared because she would be on the road, and it would be kids out playing," she said.
Wilson is scheduled for her first court appearance on July 25.