Sounds like it could be wet pox.She is hanging on. I can;t tell what it is exactly, but the skin right under her beak near the corners of her mouth are swollen and flakey/look like there's pus or something inside... Then she's got a black spot at the top of her beak where it meets the skin, as well as a bit of black near her nostrils. And she's still gulping for air, but it seems to happen more when I'm holding her, even if she's relaxing on a blanket with me...
-Kathy