We took Nhu's homemade fly mask off and discovered good healing happening. No more open wounds! She still has some puffiness around her one eye. And there is a large area of bare skin on the bridge of her nose. But all in all, very good results!
We applied aloe healing cream to her nose and created a new fly mask for her out of the other sleeve. This time I cut away fabric from both eyes so she has full vision now. She doesn't seem to mind the mask a bit. I'm very happy with my little experiment. :)