Stephenie Meyer is immature because she is making a big deal out of this and over-dramatizing it instead of dealing with the fact that life is not perfect. Yes, if someone gave someone something in confidence and they leaked it to the world, they would most likely be upset. Said person would then take a deep breath and possibly a mental health day and get on with their life, which, under the circumstances would include writing the bloody book. Her excuse is that her poor little feelings are so hurt by this evil awful leak that if she wrote the book now the Cullens would lose (gee, wouldn't that be a shame...).