It doesn't sound like she's wheezing necessarily, though maybe you would consider it to be a wheeze, but it sounds like when you have a cold and your throat is all gunked up so when you breathe out it kind of sounds like a gargle? It's difficult to explain, and I don't really hear it prior to applying the betadine, only occasionally. I also don't really observe her much, I go in and apply the betadine, checking her out in the process. So for all I know, it could be the betadine. She'll sometimes have her mouth slightly open, but I don't recall seeing that prior to applying the betadine, so that could also be due to the betadine not being too yummy, or a sore mouth.
I also have no way of bumping up her temps, I would like to. If I had an extra tank I would put her in it and put a mostly not-needed heat lamp over her.