Was her eye pecked? I am seeing a closed eyelid with a scabby area on the outside. Does she ope the eye? Can you open it and see if there are any bubbles or foam, gunk, or if the eye looks normal? Saline or eye wash can be used to flush the eye twice a day. If you have any antibiotic eye drops or ointment, or could get some from a vet that might be good. Have you heard her sneeze or have noisy breathing?
Is she low in pecking order? Can you bring her down and offer some dry and wet chicken feed, and a bit of egg? Water with electrolytes or a but of sugar might be good to offer. While her eye is closed, she may be having trouble seeing water, so she could be dehydrated. Concentrate on getting her hydrated then fed. Does she lay eggs? Has she lost any weight?