Described as "the bitch" in the introductory voice over, Zondra was accused of being a traitor and feeding information to Augusto Gaez by Sarah who had discovered a hidden transmitter in the heel of Zondra's boot. Zondra denied all accusations and passed a lie detector with the CIA. She in turn thought Sarah might be the traitor, since she was the one who found the transmitter. It is later revealed that she was framed by Amy, the actual traitor.
Sarah and Zondra apologize and mend their friendship, and Sarah asks Zondra one of her bridesmaids.
In "Chuck Versus the Cliffhanger", Zondra along with Carina came to help Chuck and his team rescue Sarah and save her from the Norseman poisoning. They all served as the magnet to distract Clyde Decker to allow the Russian troops to land without being detected.
She later attends Chuck and Sarah's Wedding as a bridesmaid along with Ellie and Carina.
Presumably, the surname may be an homage to the character from "Grease", played by Stockard Channing in the 1978 movie.