The Question and Answer section for Christina Rossetti: Poems is a great resource to ask questions, find answers, and discuss the novel.
I think she is using the word "stage" as a metaphor for nature putting on a wondrous display or performance. I could be wrong though!
Check this out:
This is largely a matriarchal world. There are no male characters: the only sign of males is near the end when we are told Lizzie and Laura have become "wives". It seems that males are not a part of female development and, especially artistically,...