User blog comment:Morganaforever/Question about Guinevere and Series 5 in general/@comment-5674726-20121112205529/@comment-4650675-20121113112858

I think her powers were back, because Merlin wouldn't risk to keep a mandrake root inside Camelot for long, since Morgana was gone. As for why Aithusa chose Morgana, that could be an explanation,but it still does not explain how she escaped with her magic powers disabled ;)