Oh Meg I'm so sorry to hear that about Gracie. Bless her heart.
I hope you can get the infection cleared up but there is one thing to remember. If she has infection and has already lost her sight then it may be less painful for her to have the eye removed. I posted about an article when Kim adopted Abby that even though a cat may be blind they can still have pain in their eyes from pressure or infection. As sad as it would be for Gracie to have to have surgery maybe you can take some relief in the fact that if it happens it could relieve any pain that she may have. It's so hard to tell with kitties if they hurt or not. They are the masters in hiding pain!
Prayers are on the way that precious baby Gracie gets well real soon and doesn't need to have surgery.
Hang in there Meg, she will be ok. PT prayers will make sure of that!