After reading her poetry at folk clubs in Edinburgh, she met the musician Robin Williamson, but left home in her teens with the intention of marrying Bert Jansch.

Her first contribution to the band came in the form of backing vocals on the track "Painting Box", on the 1967 album The 5000 Spirits or the Layers of the Onion.

By 1968, she was regarded as a fully-fledged member of the band, usually as a backing singer and percussionist, and she performed with them at the Woodstock Festival in August 1969.

[1] In 1974, McKechnie appeared onstage at a Church of Scientology concert in East Grinstead with Mike Garson, Woody Woodmansey, Leonard Halliwell and others, before moving to California and joining the Silver Moon Band.

[1] She visited Edinburgh in 1986 to see her family, but her whereabouts have been unknown since 1990 when, according to her sister, she was in Sacramento, California, apparently recovering from surgery.