[NewChief]

In the books, she's also bad because she's so inept while thinking she's adept. She bungles everything politically, makes tons of wrong decisions, trusts the wrong people, supports the wrong people, accuses the wrong people, and basically just makes a mess of everything while maintaining her self-assured superiority complex. She's completely unsuited for the role she's in (unlike Tywin, Tyrion, Littlefinger, etc..). It's kind of shitty for GRRM to write her that way but it's the way it is and gives some credence to the frequent accusations of misogyny in his writing.