Kristina first appeared on stage at the Swan Folk Club in Romford at the age of thirteen. Her first professional gig was at a Folk Festival in Southgate, London a year or so later. By 1968, while studying at the New College of Speech and Drama, Kristina was helping to run, and performing at, the Wednesday evening sessions at London's Troubadour Folk Club. She was generally known on the folk scene as "Sonja" having previously appeared several times on the British children's TV show "Song and Story" under that name. Her first manager was Roy Guest of Folk Directions.