Crop looks quite full, drinking a lot but not eating....Re-check her crop first thing in the morning before she's had anything to eat/drink. If it's not empty, then start treating her crop...
When's the last time she laid an egg?
Have you examined her at all? Check her crop - what's that like? What's her poop look like? Have you looked for lice/mites? Is she eating/drinking?
Photos and/or video are always welcome. Upload video to youtube and provide a link.