Feed looks good. Maybe get some poultry cell and try her on that for about a month and see if that makes a difference. She should be fully feathered by now.
Like a predator? I'd be more worried about that than her feathers being wet. We live above a Mountain river and mine cannot go down to it. Snapping turtles, flying predators etc.
as for her feathers what are you feeding her? any supplements?