I was there! I actually saw it! I got to see Muffin lay her egg today! It was so cool.
I went to check on her and she was sitting on the nest all fluffed up. I checked, but she didn't have an egg under her. She looked a little intent on something, so I thought I'd sit there a minute and see what happened. She stood up, then squatted a little, and stood back up. There was an egg. I picked it up. It was sticky and very warm. It dried very quickly though. We have gotten warm eggs before, but I have never seen one right as it came out of the chicken.
We can't eat them right now because she is still on the antibacterial medication, but it was fun just the same.
And she seems to be doing well. That is good news.