Just picked up on this thread after two days away - more really sad news.
I was in email correspondence with this wonderful, genuine and mightily fearless lady only last year seeking some points of clarification regarding the recent CD reissues of Cyril's Argo LPs. Rosemary was indeed a true delight to deal with, as ever, and she invariably remembered various occasions of even earlier correspondence with much more accurate recall than I !
She will be greatly missed, not least for her tireless championing of Cyril's music and his key contributions to the folk scene.
RIP Rosemary, and say hello to Cyril for me!