Tayna was a Tanugan scientist.
In 2366, she was the assistant to Doctor Nel Apgar on the Tanuga IV research station, working on Krieger waves. (TNG: "A Matter of Perspective")
In 2391, she was the rector of Spoiled Rotten University, signing the Doctor of Medicine diploma awarded to Mandy Guilmain. (Star Trek: The Stoneship Files supplemental information)