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 if Morgause told her, but Morgana obviously didn't care - or maybe this was the reason why Morguase didn't tell her (if so). 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.

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.