OOC: Some versions have Guinevere ten years younger than Arthur, but it wouldn't do for her to be eight years old now! Meanwhile, my next action picks up on Kim's post. Merlin _would _know these things; he is Merlin, after all.
Turning from his conference with Arthur, Merlin saw Morgan--and knew exactly who and what she was. To Arthur he said, "Behold, Your Majesty, a kinswoman visits you. Be watchful; but do not fear." More loudly, for Morgan in particular to hear, he added, "After all, Your Majesty, the Power looking after you is mightier than any other. I go now on my mission, which cannot wait even for so lovely and prestigious a visitor."
As he walked past Morgan, Merlin bowed to her, saying, "No harm to you if no harm you intend. You are not to blame for evil done by a past generation. Though I must leave, I _will_ see from afar exactly what passes in this hall."