This is the Path the Wolf Took

The stories Gabe 'reads' to his little sister start out sounding familiar - a red-caped girl on her way to Grandma's house meets a wolf in the woods - but then, just in the nick of time, Sir Gabriel swoops in to save the day. His sister points out that's not how the story is supposed to go. The boy says his way is better: 'Nothing bad happens in my story.' But when his sister stops listening, the boy realises he needs to reconsider. Are his stories boring? Why does it seem like there's always something missing?