Knowing your location would be very helpful - State/Country??
I would probably still give her the Doxyvet, but she is very droopy.
Can you not get some Amprolium - it is a Coccidiostat, not an antibiotic. If you are not in the US it may be sold as Coxoid or a similar name.
Can you post some photos of you pullet, her eye and her poop?
Droopy wings and hunched back, I would suspect Coccidiosis.
Knowing your location (state/country) would be helpful too.
Can you get some Corid (Amprolium)?
When using antibiotics, you only want to treat a bird that has symptoms...