Flies is the big worry she doesn't want maggots in that wound.Do you have a cage that you could put in the other ducks area? I would put her in that if you could during the day and bring her into your garage and cover the cage at night to help keep her settled down.
hugs. It's so hard to do what's right for them sometimes. FYI I just dealt with a duckling that had a broken leg and he could not use it at all 3 weeks ago. It's healed now and a bit sideways but other than a very slight limp(move from the strange movement than pain I think) no other issues. He didn't use that leg for 2 weeks at all. I think if you keep taping the wing in place it will heal - just a matter of setting it so that it heals in the best position.
Hope she continues to do well today.