Welcome To BYC
Where do you live?
What antibiotic were you able to get for treatment? (if you are not in the US, can you post photos of the medication label)
Is there a bad odor?
Any pus or lesions on the inside of the beak?
It could be Infectious Coryza with the pus and facial swelling - is there a bad smell? It could also be one of a few other respiratory diseases that chickens can have. Bubbles in the eyes could be Mycoplasma.
I would try to keep the eye cleaned out of pus and bubbles - flush it out and push out the pus a couple of times a day. Any eye ointment in the eye would be good to use if you have it or you can use plain triple antibiotic ointment.
Do what you can to keep her drinking.
Respiratory diseases make birds carriers, so do some reading up on that.
https://edis.ifas.ufl.edu/ps044