A Minnesota woman donated her kidney to a firefighter who rushed to help her daughter after a seizure

Becca Bundy holds an angel figurine that Bill Cox carved for her before she donated her kidney to him.

(CNN)When Becca Bundy's young daughter was having a seizure at home, volunteer firefighter Bill Cox was the first person to help. Two years later, the Minnesota woman was able to offer a lifesaving thank you, by giving him one of her kidneys.

Cox has volunteered with the Bearville Volunteer Fire Department in northern Minnesota for about six ye