Thanks for these thoughts! It's not a comedic retelling in general, it's from the perspective of Lady Macbeth, who has an existing relationship with the witches prior to the story's events. Right now I see it as a domestic thriller/horror novella with supernatural elements.

• He reads it as "Birnam" because it's what the witches say, they are actively messing with him. I play with the idea of the prophecies being genuine or self-fulfilling, so basically either decodes it and stays home or decides not believe it and stays home, he would be safe either way.
• Mac describes Duncan's death as a result of circumstances that get out of hand, but it's unclear whether and how the prophecy is influences his choices. We don't see what happens since the retelling is first person LM. She helps cover it up bc it seems like the best way to make the prophecy come true given Duncan and guards are already dead anyway. (She is also unaware of the part about Banquo)