Hello, this is Dr. Linda. I hope I can help with your question today.
I am sorry for your concerns about Ginger. This time of year is really tough on some horses. Pollens, molds, weeds, & of course, bugs, can all make our horses miserable.
I would definitely flush the eye(s) gently with the saline. This will help to remove any irritants that may be adhering to the cornea. If Ginger will allow it, placing a very cool cloth over the entire eye for 5-10 minutes will be very soothing.
I would also recommend continuing the use of a fly mask to protect her eyes as much as possible, & even a fly sheet to protect the rest of her body.
If the swelling does not go down, or the drainage / discharge gets worse, you may be dealing with an actual infection in the eye, or a clogged up nasal lacrimal gland. These will probably require a veterinary examination.
But if Ginger does not show any pain in the eye by keeping the eye partially or fully closed or increased blinking, then the saline & a cool cloth several times a day should suffice.
I hope this makes sense & you find the information helpful. Please let me know if you have any further questions or concerns about Ginger.