Cluckies: This whole sour crop thing has to be a nightmare. Knock on wood I have not dealt with that one.
Do you give greens in the winter? I have always feared my birds eating hay or straw and getting blocked up, so I do throw a handful of spinach or kale everyday through the winter. I think they really crave that stuff. And if they don't have it they try getting down the straw and such.
I do give them greens as well, cabbage, kale, lettuce throughout the week. I try to do what is best for them.
Have you tried vomitting her yet? No, it is not runny, so don't think it would do any good, it is not like a balloony sour crop.
Once cleared then you need to start her back on a mash of water and feed real...easy. Not letting her over eat etc. Small spaced out meals so her crop doesnt sour and block again. Some people have used monistat or anti yeast to help with the flora in the crop once it's cleared. Monistat works for a sour crop, used that on Mother in the fall. don't know if it is ok for impacted crop. right now i'm doing the massages and trying to get her to drink.
Ginger and garlic also helps the digestive system.