George Edgar is one of the humans who sits on the Council, and may possibly know Morena/Libby if she is also part. He must admit he's not too sure where he stands on witches. Especially as the image of the hag is very real in his mind, that and the popularity of the Arthurian legend and the portral of Morgana probably will have some influence too. I think he'd been more than a little scared and a little suspicious of her and her reasons.