I hope that your daughter is very well after her op’, & that whatever thyroid replacement she’s having suits her well. I have just re-read some parts of those books that I recommended about T3, & I can only say again how much I do recommend that you read them – I would recommend the 1st one: Recovering with T3, as the best place to start:
Recovering with T3 by Paul Robinson:
The CT3M Handbook: Recovering Adrenal Health Using the Circadian T3 Method – same author:
Obviously I’m not suggesting that you buy the books from Amazon, but the reviews are largely helpful.