Quick update: took her back to her pediatrician today, as per his orders if she wasn't better yet. Final diagnosis: a tiny touch of pnuemonia and a doozy of a virus. And a viral ear infection. And a rash on her chest and midriff. And swollen tonsils. And...well, you get the picture.
If you don't, here's some help:
She was feeling a bit better tonight after a long nap and a prescription cough syrup that set us back $35, so I feel sure that tomorrow she'll be on her way back to her normal perky self.