I know when a story is finished when there is not a single thing more I can think to do to it. And since I know at the start what the last line will be, I know when I've reached that point as logically as I can that it's finished. As for the rewriting-it's not foolproof, of course, but if you're honest about having thought of every possibility and you still come back to what you have, what more can you do?
Amy HempelI had a mother I could only seem to please with verbal accomplishments of some sort or another. She read constantly, so I read constantly. If I used words that might have seemed surprising at a young age, she would recognize that and it would please her.
Amy HempelAs soon as I knew that I would be all right, I was sure that I was dead and didn't know it. I moved through the days like a severed head that finishes a sentence. I waited for the moment that would snap me out of my seeming life.
Amy Hempel