I agree that a veterinary teaching hospital is the way to go here. UW has a good one and I'd certainly consider contacting them for advice or even bringing her up to Madison for treatment if possible.
Poor little Peaches, that has to be very very painful for her! Some sand probably got lodged in
her eye & irritated it then got infected. Were you able to get an appointment yet? They will likely
have to drain the eye area, then culture it to see if there is a lot of infection in the fluid or not.
Are you able to get her to eat anything right now?