Whether she was called Queen, Princess Consort, Duchess of Cornwall, Mrs Windsor, or "her indoors", would make absolutely no difference to her status, which would be that of the wife of the King.

The point which some people seem to find it hard getting their head sround is that the word "Queen" is used in two distinct senses in this context - sometimes it means the reigning monarch, as with the present Elizabeth, sometimes it means wife of the reigning monarch (or widow of a previous one), as with her mother.