If her crop is large and puffy, especially early in the morning, she may be having liquid crop contents coming up into her throat causing the gurgling, kind of like if you have mucus, and need to cough to clear your airway. Do not massage a full puffy crop because it can push contents back up. Sometimes the crop problems are a result of a reproductive disorder, ascites, internal laying, and other things. Try giving her some cut up small pieces of chilled coconut oil to help her constipation. A small bowl of watery chicken feed cannget more fluids into her. Do you have any pictures of her poops? What color are her poops or the urates?