She was apparently on Fox earlier this afternoon to promote her show (which starts on Monday), and was asked about the change in her appearance. Her response was that she'll be attending her high-school reunion soon and wanted to look attractive (I think Fox had a hand in it, personally). She said she has had some work done on her eyes and basically said that she had some "refreshing" work done to her face (my word, not hers). Her hair has also been changed from what I could see (it doesn't look so dry and brittle; and it looks like a more natural dye job).
I didn't actually watch the segment, but I read about it. But, I did catch the promotional commercial for the show, and let me tell you she looked markedly better than before. I didn't even recognise her. From what I could see, she looked good. AND, the promo said "Greta, tough and independant". So, (I think) that Fox has not only given her appearance a make-over, but perhaps her political outlooks as well. They probably laid down the conservative law!
I saw that promo.............and, in all honesty, there is no way I ever would have guessed that that was one-and-the-same person. Frankly, she looked terrific.