Hello and Welcome to our Community! I am so sorry you and your daughter are enduring this as you describe. The follicular variant can be more aggressive as I understand, but I am not a medical professional; just a papillary microcarcima thyroid patient myself.
Please try to post your excellent ? on the Dr. Expert Forum. Be patient and keep trying as the # of posts per day are limited. Dr. Lupo is excellent.
In the meantime, some other members who have had more aggressive treatments may be able to jump on in and lend a hand.
My best to you .. please let us know what Dr. Lupo says and give us updates. We are here for you and your dauighter,