User blog comment:Merlinmania/Questions on Merlin/@comment-5102537-20120709100527

Good question about Morgause. Maybe she did but since Arthur was already convinced that it was all a lie, it wasn't important anymore and using it against Uther wouldn't have worked. Morgana would know the reason why Uther hated magic so much in case Morgause had told her but Morgana obviously didn't care - or maybe this was the reason why Morgause might not have told her. Perhaps she wanted to avoid that Morgana would start to understand at least a bit why Uther hated magic and so didn't want her to feel any kind of sympathy for him. But actually, as a High Priestess of the Old Religion, Morgana surely has enough knowledge of what was and is going on and I think she already knows about it all. But it all remains unknown.

As for Mithian, I think they decided for her because she probaly plays a part in the unification of Albion. She also was a very interesting character and a serious one, not one of the female characters that actually were brought in for comedy purposes. But I think you mean Elena, right? She doesn't hate Arthur. I think she was lovely and I would like her see her again. Vivian was the one who didn't like Arthur so much before she was enchanted and fell in love with Arthur.