@Eggcessive is more knowledgeable than I am about treating this, but can you get some Terramycin ointment? Farm and pet stores should have it. I'd put that in her eyes twice a day. The eyes are connected to the sinuses so this should help the sinus infection.
If you have VetRX, that's only...
Do you have a shot of her other side so we can compare?
What other symptoms does she have that you're thinking she's egg-bound? How old is that pretty hen by the way?
If you suspect egg-bound, it's serious and you have to act fast by giving her a calcium pill right into her beak.