Oh Mab is ruthless, she's cruel, she can be wicked, she will do whatever is necessary to gain advantage. That's Winter, it is what it is.. However Mab isn't evil, she has a job to do, that is to protect the real world from the Outside. I think Harry is beginning to understand those hard facts, that's why he stood up beside her in that face off with Mother Winter. Harry gets it, he is also beginning to understand the full implications of Uriel's seven words to him. I think it is finally sinking in, though often stated before that Mab has a job to do, and his job is to help her do it, some of that may not be pretty, but it doesn't have to make him evil if he doesn't want it to. I think Rashid gets it, has for several centuries now, that's why he does what he does at the Outer Gates.
A lot of people didn't like what the final solution for Thomas, Justine, and baby was, but was there another way? Not really,Etri is old school, very old school, they are very serious about an "eye for an eye." Actually it is a miracle that Mab got as much compromise from him as she did. Yes, Thomas is losing his child, but his child will continue to live and be well cared for, and Thomas will live.. Hopefully in the end Thomas will come out the wiser for it. Justine hopefully will be cured and return to Thomas. The cure won't be pleasant, but what are the alternatives for her? Mab had her own child killed because she came to the conclusion that the possession of Maeve had gone too far and she couldn't be cured. Justine is human not Fae, so the cure may not work on her, yet Mab is willing to try because Harry is asking her to. Yes, it was a boon to him, yet Mab had a way out of agreeing to that. She could simply have said that her ice cure won't work on a mortal human. Or there is no evidence that it would, not exactly lie, which the Fae can't do, but decieve, which they can do. However she is willing to try, no Mab isn't evil, but she is hard, very hard.
