Kilmeny in the Dark Wood by Florence Stevenson was published in December 1973 by Signet. Kilmeny was a changeling in her noble family and love Charles Cameron who was the one person who could help her understand her family.

The only other place I've seen the name "Kilmeny" used was one of L. M. Montgomery (Anne of Green Gables) who wrote a book: Kilmeny of the Orchard.

Allan Kass shows a heroine who looks like a wild gypsy as she runs barefoot on rough ground. She is very enchanting and is set in a perfectly scary scene with the mansion and overcast skies. We don't know if she's being chased or just runs loose like this.