Sc. 2.
"I thank thee, Nell; these words content me much."
So the name was written evidently by the poet, and Elianor in a following speech of the Queen's. As Margaret had only occurred in the beginning of the play, and she is always simply Queen, Shakespeare, when making the additions, had probably forgotten her real name. Editors are therefore not justified in making alterations.
"Of ashy semblance, meagre, pale, and bloodless,
Being all descended to the labouring heart."
There is evidently a line lost between these.
"Madam, be still! with reverence may I say it."