Answer:
Stoop from your cold height, Helen Grey
Step-by-step explanation:
With this line, the author tries to warn Helen Grey not to think too highly of herself and to get off the golden throne she put herself on.
"Cold height" also implies the distance from reality, somewhere where she doesn't have the intimacy, the connection, the closeness of other people, and, with it, sensibility. Author calls Helen to think over about her expectations and reality.