If she doesn't want to lay down and sleep it might be painful to her. Her sinuses are full and the goo has to get out somewhere. Out the ears causes ear infections, out the eyes causes eye infections, down the Eustachian tubes causes tonsillitis, it only has a few routes it can take to get out.
So to me having the doc give her a decongestant would be the first step. Even with and antibiotic she is going to need that goo to be thinner so it will drain out easier and faster. That way she'll feel better sooner.
Then she'll need meds to treat the infection that is showing up. I'd call the doc this morning and tell them about the not sleeping. If she's congested she does NOT NEED to sleep a lot. That can contribute to pneumonia. Sitting up, moving around, coughing, breathing deeply, etc...will all help her to not get a lot of congestion in her lungs.