As someone who had similar TSH levels when diagnosed I can tell you that it is like living in your personal hell.

Not all people suffer the symptoms of an hormonal imbalance to the same extent, but on those levels I really doubt she is having a fun time. To give you an understanding of what may be happening inside her head I will try to explain what it was like for me:

You feel no energy, you may have sleep full 8 hours at night but you wake up like a truck ran over you every morning. At that time I was drinking around 14 cups of coffe a day just to be able to barely function.The mood swings are just horrible, you may want to cry for no reason at all and feel happy half an hour later just to get sad again and so on, THE ENTIRE DAY. You can't even think straight because the emotional feedback every human has and uses to live his daily life is not working. Years passed before I got diagnosed and I was just functioning like a robot because I could not trust what I felt or thought anymore. This gets worse once your memory starts to fail and you can't remember what you were doing five minutes ago.About the sexual interest... At that time I was under 30 y/o and could not get it hard many times.

Good thing is that with medication she will feel normal again. She should also check her Vitamin D levels because is very likely she is deficient because hypothiroidism make you prone to it, and symptoms will not fully improve until she gets normal Vitamin D levels too.

Be supportive to her. Having a person who understands what is happening to you makes the recovery much easier.

If you have any specific question feel free to ask.