"I am a necromancer, but not of the common sort, while others of the art raise the dead, I lay them to rest - or try too - and those that will not rest I bind, for I am Abhorsen..." He turned to the baby again and added, almost with a note of surprise, "Father of Sabriel."

The Trackers were on the move again, spreading out to search. It sounded like a trio on each side of the train, coming toward him. Gold-Eye pictured them in his head, trying to get his Change Vision to show him exactly where they were.
But the Change Vision came and went when it chose, and couldn't be controlled.

Gold-Eye's Change Vision suddenly gripped him, showing him a picture of the unpleasantly close future, the soon-to-be-now. Doors slid open at each end of the carriage, forced apart by metal-gauntleted hands four times the size of Gold-Eye's own. Fog no longer fell in lazy swirls, but danced and spiraled crazily as huge shapes lumbered in, moving to the pile of blankets... Gold-Eye didn't wait to see more. He came out of the vision and took the escape route he'd planned months before, when he'd first found the carriage. Lifting a trapdoor in the floor, he dropped down, down to the cold steel rails.

I don't believe authors need to keep any specific values or ideas in mind while they are writing for children, but I do think authors need to be aware of their audience, and of the effect their work may have. So if they want to address particularly sensitive topics or taboos, they have to do so consciously and carefully. This is very different to toeing a particular moral line or leaving things out. Certainly I don't think good always has to triumph over evil; it depends on the story and the aims of the book. For example, I could envisage telling a story where the inaction of people leads to the triumph of evil. But I would include the hope that this would lead to the people involved doing better next time. Is that story then really about the triumph of evil, or is it about the awakening of opposition to evil?