What you have described in your daughter sounds much like what I went through a few years ago. I was told many times that my being tired was due to depression. I was even sent to counseling all to find out that the depression what coming from a medical problem. I was diagnosied with hyperthyroid. My thyroid was over active to the point of having night mares and sleep paralysis. I too would wake in the morining and need to take a nap after having gotten dressed. My heart was beating so hard and fast that I would vibrate the person next to me. I lost weight easily and was mentally drained (college grades suffered). My thyroid was removed through surgery and I take synthroid. It took a long time after that to regulate my dosage. Our body's needs change over time and what is a normal T3 and T4 for one person may not be what is right for someone else. My suggestion is for your daughter to find a doctor that is willing to treat the patient and not the lab results. It took me three years to find that doctor and now I feel wonderful. Best of luck to you and your family. I will keep you in my prayers.