User blog comment:Arthurlover7/The Disappointing End/@comment-5995315-20130125151242/@comment-5995315-20130128140353

Yes, Evil!Gwen did seem normal to Arthur in her openness. Episodes 10 and 12 showed her in her more carefree state even when she was back to normal, and it seems the producers were trying to offset the impression the Evil!Gwen story arc left. The only thing I've heard in the commentaries is that the arc was meant to help bring the series more in line with the legends. But it left the impression that the only good Gwen was a bad Gwen.

As best I can understand, those first episodes must have been meant to show  that she was a capable queen since we now know she would one day rule. Then, too, they were meant to show she and Arthur were on the same page about how to govern. So there's no doubt that she can bring Albion forward, and that implies  Gwen is the actual guarantor of a future united kingdoms.

Of course, this takes her straight out of the role of lover and puts her in a different place. The only  message I can see is that the qualities that made Gwen admirable as a friend and lover later came to make her a strong leader as well. That's still not a very satisfying answer, but it does give Gwen's character some consistency.