The ones who no one sees
Wonderful! Because you told how many steps there were to each bedroom, I thought she was going to the princess's room, then checked that off and decided she was going to rat out the princess's tryst to the queen. Nope, still going. That innocuous detail about the steps to the rooms was beautifully placed and perfect for keeping the reader guessing. Also, the two voices were like the circling of the stairs. You did a terrific job with the prompt of the person in the background. I enjoyed reading your entry more and more as it went along! Perfect ending. :-)
I did not expect this ending at all. Well done.