Sorry to hear, I hope she will recover in no time

. Thank you a lot for your input regarding the breed by the way!
- So I made a solution of 10mg/ml of Clotrimazole diluted in water. The Clotrimazole was administered over the course of approx. 7 days (PO - by mouth). The first five days this was given twice a day (20 mg in total) and the last two days approx. 10-12 mg a day. The Clotrimazole brand utilized was the ''CANESTEN GYNO 1'' capsules (containing 500 mg of Clotrimazole in total).
If you want more info I made a post about this a little bit ago that might help you out perhaps:
https://www.backyardchickens.com/threads/how-to-treat-sour-crop-seemingly-effective-updated.1451264/
Best of wishes for her recovery!