(Brief pause while every writer who is reading this engages in hysterical fits of laughter.)
The thing is, I have discovered, it's not quite that simple. Not that a writer cannot change a story. Of course we can - we're the ones writing, and we are writing, not channeling some divine muse or some other such rubbish. But making a change means acknowledging that we are telling a different story from the one we started out with.In story as in life, people die. Bad things happen. The good guys don't always win, and even when they do, they are changed and sometimes tarnished by the experience.
It's hard writing those scenes. I am currently hiding from revising a particularly nasty scene in the novel. But it has to be there. I owe it to the story.