I was just rereading the part where Mimara catches up with the Great Ordeal, and is brought in to see Esmenet. Kelmomas is standing there, and there is a bit where Mimara doesn't see him, despite him being right in front of her. After a bit she blinks and catches sight of him.
I think that the Judging Eye is also unable to see Kelmomas.
[EDIT Madness: Rearranged Subject]