She was the daughter of June Carter Cash and her second husband, Edwin "Rip" Nix.
After her mother married country music singer/songwriter Johnny Cash in 1968, Nix became one of his stepdaughters.
[2][3] Nix started her singing career performing as a backup singer for her stepfather's The Johnny Cash Show.
On October 24, 2003 she and Jimmy Campbell, a bluegrass musician who played the fiddle, were found dead on a bus in Montgomery County, Tennessee.
They died from carbon monoxide poisoning, produced from propane space heaters in the bus that were used without ventilation.