Margaery was silent for a long time- at least, it felt like a long time. Several heartbeats passed by, thick and uncomfortable as she attempted to process exactly what he was saying. Her focus naturally wanted to shift toward Cersei- she already knew about the state of her children- two of which had ended up her husbands; Robert Baratheon's death was new information, but the opposite of a surprise.
What she needed to focus on was his second point. It's a story.
Her world was a story.
After a while, her eyes turned forward again, watching (but not really seeing) as they walked. They had not lost their hard edge.
"Perhaps we should revisit this conversation after that wine..."