User blog comment:TomWelling/Aithusa's RETURN!/@comment-5734522-20121126124524

I am not sure if they are going to do the battle but if they are, Kilgarah will be the winner 100000%. He will kill her, perhaps.

But I do not think this is how it will happen.

I believe Aithusa and Kilgarah may fight but Merlin as a dragonlord will stop them.