I hope your little hen is ok! Are there wild ducks in the area that she could have joined up with?
It’s amazing how well they can fly when properly motivated. I do not clip my Muscovy hens’ feathers, mostly because only one can fly well and she has no wish to live a solitary life as a wild ‘Scovy in Vermont. That being said, she took off for the first time ever after being startled by a utility man a couple of weeks ago. I spent hours following her through the woods, watching her fly here, there, and everywhere but home. I only got her back once she got lonely and hungry. Anyways, my point was really that she was very much capable of evading danger, and I truly hope your little hen has been able to do so as well! Keep us updated!