She may panic and injure herself, or she may die of shock. Many raccoons can open hutches. Other predators include coyotes, owls, hawks, possums, cats and dogs. I live in the city. Don't think your yard is free of predators just because you live in the city.
Raccoons come up through storm drains and arrive in very urban areas.
These agile animals can climb tress and open doors. Wire cages are no protection for your bunny. If your bunny cannot stay in your house at night, make sure that he's enclosed within solid walls and behind a solid door a garage, shed, or basement with a good lock. Some outdoor rabbits avoid death by predator or the other risks mentioned. A life spent confined to a hutch is boring, depressing, and stressful for a sensitive creature such as a rabbit.