Yolanda was not Mary of Burgundy.

I had little knowledge of princesses and their ways, but I felt sure they were not in the habit of lurking in dark places or wandering by sluggish moats in the black shadow of a grim castle.

A princess would not and could not have been loitering by the bridge near the House under the Wall.

Castleman's words concerning Yolanda's residence under his roof came back and convinced me that my absurd theory concerning her identity was the dream of a madman.
"She happened to be near the bridge ?" I asked, with significant emphasis.
"Perhaps I should not have used the word 'happened,'" returned Max.
"I thought as much.

What did she have to say for herself, Max ?" "If I were not sure of your devotion, Karl, I should not answer a question concerning Yolanda put in such a manner," he replied; "but I'll tell you.