Hi, dear I have gone through your question. I can understand your concern. She has thyroid problems. Now she has symptoms of tiredness and loss of appetite. These can be seen in hypothyroidism. She may have hypothyroidism. She should go for T3, T4 and TSH level. Then set the dosage of thyroxin accordingly. Hope I have answered your question. if you have any doubts then feel free to ask me. I will be happy to answer. Thanks for using health care magic. Wish you very good health.