The vet wrap looks like this
I have human wrap like this that's work good to. This width I would probably cut into thirds about 6 inches long. Now I wouldn't wrap like the humans pic completely but something similar. Maybe even medical tape cut thin to hold the gauze over the eye. I think it would stick to feathers?
If she wouldn't tolerate it during the day even just at night would help I think. You would have to experiment I guess to see what works best.
I would also flush it with sterile water if you haven't yet. It would flush out any debris. You can get it at any pharmacy. The Nustock is pretty thick and might even hold a small piece of gauze pretty well. I wouldn't put the Nustock in the eye socket though. I know people have packed wounds with Nustock but never an eye injury.
I'm just thinking with the eye gone and the open wound there it's going to be more prone to infection. the herbs won't hurt her but will help her heal.
Wish I was closer I have all the items in my chicken first aid kit. Of course being an EMT helps me keep it well stocked lol