NFC, I'm sorry to hear your poor daughter's got a flu bug just before Halloween! The best things for her to do are to eat what she can, drink what she can, and vomit the rest. The vomiting and diarrhea get the bug out of the body, the food and water help build up the immune system and prevent dehydration. Other than that, the flu is the flu, and there aren't any meds out there to remove it.
For those of you who think a flu shot will keep you safe, think again. The flu shot is nothing more than fluent larva injected into your system to allow your body to build up an immunity to it. However, NO 2 flues are the same, period. It mutates from person to person, there are hundreds of thousands of different strains out there, and this new Swine Flu is nothing different. Remember 2 years ago, when Bird Flu was the concern? Where is it now? Next year will be the Feline or Bovine or Canine flu. Something to get us all scared again. Just remember, if it settles in the lungs, get some meds to keep them clear. Otherwise, there REALLY isn't much you can do to prevent or get rid of a flu. For fevers, keep that person cool. No blankets, no extra clothes. Let them shiver it out until the fever breaks. Ice packs help too. If you feel it is a medical emergency, contact your physician, but for the most part, TRY not to flood your local EMERGENCY ROOMS with colds and flues.
There, now that my public service announcement is done, Show them pics of the costumes!