The information quoted in the original post duplicates well what is printed on the front of the sheet music for the "Lament for Nurse Cavell."

On the back, under a photograph of a sculpted bust of Edith Cavell, is a poem with the citation that it was first printed in the Glasgow "Citizen."

by Elise Rae-Brown

Her life for evermore is robed in light;
Her sacred memory lifted to the stars;
Martyr and Saint to-day our hearts acclaim her,
The nation's love shall be her monument.

Deathless her deeds in human hearts shall live,
Making immortal that last sacrifice.
And so we leave her to her quiet rest,
Palm branch and Cross of Victory on her breast.