I have recently been diagnosed as hypothyroid and can see it is one of those illnesses where there are battles to be fought. I am very lucky though and as someone who is retired, I can manage my energy - or rather lack of it - a lot better than someone who is working.
This article is a little out of the NHS norm but gives a list of 300 symptoms of hypothyroidism. It may seem a little extreme but what it brought home to me was that, even though I have a great doctor, I have never been asked about my symptoms. My levels were picked up because they/I thought I might be suffering from depression. Another doctor, not my normal one, said "we'll do blood tests just to exclude anything else but I don't expect anything". As it turned out the unexpected showed up.
If you are thought to have something like depression there is no blood test so they ask you a lot of questions and then treat you according to your symptoms. With conditions such as this they take the "approved" blood tests - not all of them and judge by a scale which, I believe, can vary from country to country.
As I say, I am improving. I do not feel exhausted all the time. I do feel tired most of the time and exhausted some of the time. The brain fog associated with this condition is much better so I no longer feel that a) I am already following in my mother's footsteps with Alzheimer's and b) am not fit to drive.
My digestion is still a problem but water is my friend. It is likely that a lack of natural thyroxin is simply making digestion very poor or, in some cases on some days, impossible.
My voice is more my own and swallowing is improved although I can still have problems.
I won't go on but, what I wanted to point out is that, according to the tests I am at the lower, less worrying end of the scale and I still battle with this - particularly the tiredness. It becomes impossible to fight and I must sleep to recover.
Could I suggest that your daughter looks at the list of symptoms and writes out one of her own, picking out those that affect her, with a comment about the severity she is dealing with. If she takes this with her to the doctors they may then look further at he meds. I do hope so. She has my best wishes as this is a long way from just feeling tired 