You may want to take her to a vet. Sour crop or impacted crop can be very difficult to treat. I have lost one recently that I treated for almost 6 weeks. Many times, crop problems are due to other illnesses. Have the eggs she has been laying looked normal with hard shells, or has she ever laid any soft or thin-shelled ones?
I would learn to tube feed her today by reading some threads and looking at videos. You can use a 35 ml syringe from the feed store plus a length of aquarium air tubing for water and liquids. Your vet might sell you a proper feeding tube with a catheter tip syringe. They are available online as well. That way you can keep giving her electrolyte water, vitamins, and probiotics. Antifungal medications, such as Nystatin might help to treat this.
I would learn to tube feed her today by reading some threads and looking at videos. You can use a 35 ml syringe from the feed store plus a length of aquarium air tubing for water and liquids. Your vet might sell you a proper feeding tube with a catheter tip syringe. They are available online as well. That way you can keep giving her electrolyte water, vitamins, and probiotics. Antifungal medications, such as Nystatin might help to treat this.