Since this huge egg issue, Flora has laid two perfect eggs. She's in good spirits, doing her daily chicken thing, and eating/drinking normally. She hasn't lost any weight and appears to have come out of it fine with no intervention. I think I got lucky this time.
Thank you, Kathy, for all of your help and thanks to everyone else who posted! I'm so relieved. Flora is such a sweetheart, I would be so sad if something happened to her.
This is Flora, the Australorp, and her bestie, Red Hen, a couple of days ago.