Abby Snodgrass is a hero … and she’s only 17 years old!

The quick thinking teen saved the day at a High Ridge, Missour Walmart when she performed CPR on an 11 month old baby who had suddenly stopped breathing. Snodgrass says she heard commotion from a few aisles over and sprung into action using the life-saving method she had just been taught in health class at Hillsboro High School in Hillsboro, Missouri.

“The one thought that crossed my mind was, ‘What if this doesn’t work?’ And I just had to push it out of my mind and keep going because I knew that’s what I had to do,” Snodgrass told ABC News.

Soon the baby began breathing again and the mother was beyond appreciative.

“We are exceedingly grateful to the young woman who helped our daughter,” the baby’s family said in a statement to ABC News, “Our daughter is home and healthy, and we couldn’t be more thankful.”

See the ABC News story below — it’s truly a miracle!