In 1968, Kristina auditioned for and won the part of "Crissy" in the London stage production of the stage musical "Hair". She features on the original cast album singing the song "Frank Mills", also released as a single. She also briefly sang with The Strawbs, following the departure of Sandy Denny. Dave Cousins remembered: Cousins eventually published the book, called "The Bruising of Hearts, The Losing of Races", in 1993. It included a poem "Silver Smile", written for Kristina in the late 1960s.