I just read the whole thread. You and Rosie and your whole family have been through a lot the past few days. I have learned more about prolapse by reading your thread. I'm glad that you have vets in the area who treat chickens and that you have your follow up appointment tomorrow. You sound concerned about her droopy comb and a change in appetite. It may be due to just stress. But just in case it involves her crop, you might want to remove her food and water before bedtime, and then check to see if her crop emptied by the morning. That will help provide your vet with more information to rule out anything involving the crop. Because it sounds like Rosie finds it relaxing to sit in your lap, you can give her a little crop massage at the same time.
Hang in there, and keep us updated.
Hang in there, and keep us updated.