FORT WORTH (CBS 11 NEWS) – Police say the death of 14-year-old Kierstin Eaddy was nothing more than a tragic accident.

Eaddy was killed Sunday in a go-kart accident at Texas Motor Speedway.

Eaddy was an experienced go-kart driver, having started the sport when she was 7 years old, according to her father, Todd Eaddy.

Along with go-kart racing, Eaddy volunteered her time to help children with special needs.

At the age of 12, Eaddy began volunteering at SpiritHorse Therapeutic Center, to gain a silver award for Girl Scouts.

“My wife and I have a 6 year-old son, Grayson, who suffers from something called Joubert Syndrome, and one of Grayson’s issues is that he is very weak physically,” said Michael Goldenbaum.

Eaddy acted as a spotter to Grayson, helping to keep Grayson safely on the horse as the horse spun around, and offering encouragement, as the exercise worked to strengthen the boy’s core muscles.

Eaddy did earn her Silver Award, but she did not want to stop volunteering and continued to work with Grayson for the next 2 years.

When they began working together, Grayson could barely hold himself up. After more than two years of weekly Sunday sessions at SpiritHorse, Grayson made great strides and was able to hold himself up on the horse.

The teen even made a scrapbook for the family.

Now, it’s a sacred treasure trove of memories. The Goldenbaums were stunned to hear of her untimely death.

“For someone so young and full of promise, I just- we just still haven’t come to terms with it,” Goldenbaum said. “There are just not many young people that will, you know, go out of their way to make another child feel special and to continue to give themselves the way she did.”

(©2014 CBS Local Media, a division of CBS Radio Inc. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.)

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