It is important to monitor your daughter's symptoms closely. If the diarrhea and fever seem to be improving, it may not be a cause for concern at the moment. Make sure to prevent dehydration by using rehydration solutions and dressing her lightly to help her body regulate the fever. If the rash persists or worsens, or if the fever is still present after a few days, it would be best to consult a doctor for further evaluation.