Her crop could feel puffy and slow to empty due to another illness, but it could be that she has sour crop. If she is that weak the bath might do her in. Can you clean off any loose or dried poop, just to get a look at her vent? That would be good to make aure that she doesn’t have a prolapse or maggots on her vent. Can you get her drinking some water, and give her electrolytes or some NutriDrench if you have it? She might be dehydrated from the heat or illness. If she is hot and panting, you may soak her feet in some cool water—just stop if she is too weak. Offering some chopped egg or watery chicken feed after she has eaten might perk her up.