That is great news, you want to ensure no feathers are struck in the wound as it scabs over. That is the reason for clipping besides being able to see what your treating.
It's amazing what out ducks can survive so Hopefully with what you are doing and the great advice already given will get her back to health.
Like @Jenbirdee said it is a good idea to clip or pluck the feathers away from the wound and I would rinse with saline more than once do it a couple times...