You don't need to get any test or worry at this stage. For fever, you can take Tab Paracetamol 500 mg as required for fever. Fatigue and dry cough may last for few days and it usually resolves on its own. However, check her saturation regularly (Target >94%). Also, Check fasting blood sugar and blood pressure. It's important that her blood pressure and blood sugar are controlled as they are major risk factors for severe infection.

Need to do a few blood test to rule out increased inflammation