Good morning! (For me anyway)
Just finished doing my search on sour crop under the old experts user names......
Came up with a few things to keep in mind.
#1. Stop the scrambled egg with sour crop! I had no idea. It is not easily dissolved. They recommend instead to hard boil an egg, and mash the yolk really well. Then feed the yolk only.
#2. Its probably best to get all the toxic stuff out ASAP, before it makes her sicker. If you have a vet empty it, do not let them give you antibiotics after unless they are certain.. apparently, it is much more crucial to try and re-colonize the good bacteria, than to wipe everything out.
#3. You don't have to turn them upside down to get the contents out- you can try and massage them through the system, and the massage will also help them burp out gas.
I have really high hopes for Daisy! It seems like you caught this early enough, and since she is still.feeling somewhat okay..
...I just know she's going to make It. She has to!
Okay, here are a few links. The first one had a sad ending, but they didn't figure out until later in the thread that it was sour crop. You have to go through a few pages of posts to get to the good info.
https://www.backyardchickens.com/forum/viewtopic.php?id=248715&p=1
And then this one has good info as well, although the OP never updated, so we don't know the outcome.
https://www.backyardchickens.com/forum/viewtopic.php?id=199961&p=1
Hang in there Daisy!