You should continue giving her Centamol drops (paracetamol) every 4 to 6 hours as per the instructions on the bottle, and ensure she drinks plenty of fluids and gets adequate rest. A recurring fever every few months should be discussed with your doctor or paediatrician to rule out any serious conditions such as periodic fever syndromes. Please seek urgent medical attention if she develops a rash, becomes unusually drowsy, or has difficulty breathing.