How Can Severe Fatigue After Recovering From A TIA Be Treated?

Thank you. My wife had a TIA episode on December 9th including seizures. After eight days in Nuro ICU she recovered considerably (no paralysis, some hand tremors now) however she is very tired. She had breast cancer (she is 83) and she is on the following drugs. Livalo, Divalproex, Nitrofuration 100 MG, Propranolol 20 MG, Sertraline, Letrozole 2.5 MG and Losartan plus baby aspirin. She lacks energy compared to before the seizure and recovery period of 45 or so days and is very tired. A bio-chemist told me that she should not be on 2.5 MG of Letrozole but rather 0.5MG? The problem is that when you are dealing with many specialists none of which communicate with each other one does not know if there are adverse reactions between medications. I am not a medical doctor although I have a doctor of laws and serve on a university board here in Florida. The recent neurological scans show normal and one physician reported a possibility of a high ANA and a blood culture is being sent to California for further analysis although she does not appear to have the symptoms of Lupas? Thanks for any thoughts you may have.