That's awesome about your limper that isn't limping any longer. Thanks also for updates on the other things you've tried. It can really be a help to others just starting out.
https://www.backyardchickens.com/threads/slipped-achilles-tendon-on-duckling.337685/. Read down a ways and you see talk of taping maybe vet wrap would work. Post 8
If you feel along the back of her leg you may be able to tell by using the other leg as a guide. If it’s popping back an forth maybe @casportpony can give instruction on how to keep it In place.
Looks great be sure to keep this pic before so in a week after moving them inside you can post an after with poop on the walls. Very nice build I love the color.