Well that great news. I'm glad she is back with the flock and doing good. Just keep an eye on her and you did a great job of nursing her back to health.
Oh my goodness that poor duck. I'm so glad you brought her inside. I would give her some electrolytes in her water to help build her up. You can find a package of this in the feed store. Please keep her warm and dry and plenty of food and a water bowl that is deep enough for her to put her...