I agree that it looks less like a respiratory issue (no eye drainage, no nasal crustiness) and more like an abscess that needs to be drained, especially if it's only on one side of her face. It could also result from something sharp getting embedded near her eye. Do you have a vet in your area that could help?
Here's an old thread with someone else that had a similar issue.
https://www.backyardchickens.com/threads/above-eye-severely-swollen-please-help.611367/
Sorry your first post is under these circumstances. Hopefully she makes a full recovery.
Here's an old thread with someone else that had a similar issue.
https://www.backyardchickens.com/threads/above-eye-severely-swollen-please-help.611367/
Sorry your first post is under these circumstances. Hopefully she makes a full recovery.