User blog comment:Ḡwẵine Ḹٍٍkƨ Ĺiĸe Ͼềлȑềd/WORST plot hole in the HISTORY of 'Merlin'/@comment-4916403-20121014212601/@comment-193.175.223.77-20121017134210

As far as I remember Gwen wasn't even in the room with Mordred, when Cerdan was executed.

Sorry, but I'm pretty sure Gwen never saw Mordred using magic or such.