User blog comment:EmrysOfAlbion/Battle of Kilgharrah and Aithusa/@comment-207.47.242.3-20121204043426

I can't imagine Merlin commanding Kilgharrah to kill Aithusa, especially when Merlin is a dragonlord himself and can command Aithusa to stop. If Kilgharrah kills Aithusa, I think it would be of his own will and only because Aithusa's treachery was so terrible that killing her was the only option.