I just read through this thread, as a former breeder I thought I might help, but SilverSage has it under control! Just as an FYI, I agree with SilverSage about removing the eggs as well, that's always the way I handled it when I had a bird that I wanted to stop laying, I always found that if I boiled or froze the egg and put it back in with the hen it seemed to encourage her to stay in "breeding mode" or "nesting mode", but if I took the eggs out completely she would more quickly forget about the whole situation. But I too would never try to advise you to go against what your avian vet has told you to do, I'm not a vet either.
I would however advise you to take your hen in for an avian vet visit soon, possibly after you're sure she's done laying (or perhaps before since she did lay a soft egg, that's a scary thing), and see if your vet will give her a calcium injection. That was what my avian vet would do, I had one cockatiel hen that was beautiful and a real sweetie but I just couldn't breed her. She was the only bird I had ever had that laid soft eggs, and she did it on a regular basis. She was a little bugger, I actually took her away from my breeders and made her a pet, she was always separate from all males so her eggs were infertile, but that little hen would not stop laying no matter what I did, and I started getting her calcium injections. She ate the same high-quality diet as all my breeders did, Harrison's High-Potency pellets, egg food, she loved her calcium block, but she just had this low calcium issue. So she started getting calcium injections and it did help with the soft eggs, but didn't she become egg-bound anyway...She's one of maybe 3 or 4 hens that became egg-bound in 21 years of breeding, and I got her to pass it but I hope you never have to go through that, as it is so scary. I only ever lost one hen to egg-binding, a beautiful spangled English budgie that was actually very tame even though she was a parent raised bird that I specifically bought as part of a proven pair. She never had any issues, I had her for 2 years and she and her mate had 2 large clutches after they settled in to my aviary. But she had laid 2 eggs and all of a sudden on the third she started squawking and was obviously in pain. I put her in a steamy bathroom and did the usual things that you do but nothing helped, so I rushed her to the emergency animal hospital about 40 minutes after I discovered she was egg-bound, and she died during surgery. So that's how suddenly egg-binding can happen. Any calcium you can get her to ingest is good. Coating her pellets with the cuttlebone is a very good idea, even coating any seeds she eats is good because they can't help but to put the seeds in their mouths to crack them, and they inadvertently eat the calcium. Same with sprinkling it on their veggies and fruit, the same way you do with calcium supplements for reptiles. I have a bearded dragon and a huge part of their care is making sure they get an ample amount of calcium and vitamin D3 every day along with proper UVB lighting, if they don't get calcium supplementation and proper UVB lighting every day they cannot digest their food and they quickly develop Metabolic Bone Disease (MBD), which is similar to what happens to female hens laying eggs. So every day I sprinkle a calcium with vitamin D3 supplement on my beardie's salad and dust his feeder insects, and every other day I do the same with a total vitamin and mineral supplement that also contains calcium and vitamin D3. So the same principle can be applied to your hen. But a liquid calcium injection can bump her levels up quite a bit.
Good luck to you, and make sure to watch your hen closely to make sure she is not carrying an egg she can't pass. If you think she might be egg-bound or you have any questions at all about anything, please don't hesitate to ask, or to take her to your avian vet. Better safe than sorry.
"Dance like nobody's watching..."
I love sprouting as well but I don't want to start overloading you with things you COULD do (no matter how great) and overwhelming you so you can't do the things you SHOULD do.
