Have her TPO anti-bodies checked.
If they are extremely high, that is a good indication that she may have Hashimoto's Encephalopathy.
It is caused by the anti-bodies, not the TSH level. If she is suffering from that, a few days of the proper treatment should show her improving much.
I can't remember if it is treated with steroids or what, but it is easy to Google and find out.
What was her last TSH result? Has she had an ultrasound? Has she gotten a second opinion from an endorcinologist? I had many of these symptoms when I was really hypothyroid. Have they checked her for any blockages in the brain. There could be many reasons for her symptoms. Has she had a CAT scan or MRI? Maybe a little more medical info would be helpful>
What was her last TSH result? Has she had an ultrasound? Has she gotten a second opinion from an endorcinologist? I had many of these symptoms when I was really hypothyroid. Have they checked her for any blockages in the brain. There could be many reasons for her symptoms. Has she had a CAT scan or MRI? Maybe a little more medical info would be helpful>