hope she feels better soon, good idea to call nurse on call and go to hosp if you are really worried no harm in going in with a little one i say. i agree i find panadol better for a fever, but do what your dr recommended.
dont worry about the not eating, as the others have said just try to keep fluids up. if she is drinking you could also do a smoothie or something to get something into her, but really water etc for a few days shouldbe ok.
let us know how she goes,. oh it is awful having a sick bubba