Help Scarlet Survive

We found a kitten on the side of the road yesterday. She looked much worse, having scabs over her one eye to the point where she couldn't open it at all. We took her to the ASPCA, but they were full and couldn't take any kittens, especially in her condition, they couldn't risk the other hundred cats to get sick too. We cleaned her up there as best we could, then went off to find a different animal sanctuary. We got lost and decided to just take her home to try and give it rest before trying the next day. We took her to a local pet shop where we bathed her and the groomer said that she has an upper respiratory infection and an eye infection, who knows what else.
There's hope though! She started walking around and ate a lot between yesterday and today. She has so much love in her. She loves cuddling with me and can't go to sleep unless she's on my bed. Reallllllyyyy adorable.
This is a long shot since I don't have many followers, but I would like to set up a donation to help her. Even with working, I would not be able to help this poor kitten. I've called 4 vets, they all said it would be about 600 dollars in total. Please help us out, I've fallen in love with this kitty and I just want to see her better, no matter what.