The moisture and humidity is what will help her shed, so I'd say the fog is a good sign. We always loosely "pack" the rubbermaid about half full with newspaper. (I say we, but my husband's always the one to do it, I've watched him many many times though.)

I hope it's not stressing her out too much. I'm sure she'll be feeling better if she can finally get that shed off though. Between the need to shed and the fog she probably isn't seeing too well, poor girl.