Great to hear! I found the table and it says 16-18% protein for 2 to 8 week old ducklings. It's in this thread https://www.backyardchickens.com/t/750869/raising-and-caring-for-ducklings#post_10611711
Keep an eye on the wings of the others, too. If she doesn't start bleeding again you can do that. But I would wrap if the angel wing gets worse. The wrap will have to stay on for 7-10 days.
What is the % protein in the food? There is a table on the forums somewhere I don't know about swimming...
Ouch that looks painful. I think wrapping her wings will be the best thing to do, even if it isn't angel wing. Maybe put a gauze around the new feathers too. Here is the thread about wrapping...
Ouch, poor girl. If she has angel wing you will have to wrap the wings up, and maybe change to food with less protein.. There is a thread about the wrapping somewhere, angel wing doesn't resolve on its own. Clean water is good, about the antibiotics I don't know (is not freely available in my...