(ooc: Kim, here is the deal. When Morgan came to the court. She did not tell Arthur about being his sister, because she had an evil plan that involved some explicit material that we are not mentioning here. And since we are not going there, could have Morgan drop the bomb or leave it for another time. Maybe it you leave it for another time, we could do something with that later. Some kind of deception.)
But of course CF has another opinion, so it's up to you now.
IC:
"And how, I pray, dear Lady, do you know of Queen Igraine and why is it that her sister is looking for her."