Hmm... I don't think there's any contradiction. They are separate things. She was the one who ordered those kids killed, following Inferno's motto of by any means necessary. I suppose that "wonderful" just indicated she was pleased with his work. If Zwei doesn't want to be a tool, according to McCunnen's views, he should at some point start to make plots of his own to further his own position (and enjoy his new life). I think that's what she's after, not rebelling against Inferno's goals and methods as such.