Do you have an article/more information that Calcium in water will make the egg softer?Egg bound will cause off balance problems and cause overuse of wing to support. Now it looks like leg is stepping in to help. Have you tried calcium? In your case, I would forgo free fed and buy calcium tablets, desolve and put in her water. Smallest dose in pill. Really feel between pelvic bone for egg(s). Extra calcium in water will actually go to bounded egg and make it softer, start dissolving it so they can pass. You can also feed charcoal to her .. pharmacy carries.
What is the charcoal for?