[Jeeves would very much like to point out that given the laws of statistical probability, being 'overdue' for a random occurrence is impossible, but he holds his tongue. This woman - mare? - is a member of royalty and has been most gracious in her time and explanations. He also has another question now, talking of those.]

I see. We are to sleep in the realm of dreams, then, madam? Or is 'dream' another term for a creature or setting endemic to this reality?

[They have 'nightmares' meaning more than just bad dreams, after all.]