Hello,
I had gone through your question and understand your concern for your daughter...
This kind of products will not completely cure the disease, it can give temporary relief, but not permanently...for that you need to consult a good neurophysician...
I have seen many intractable
migraine cases, but they get relief after sticking to the treatment for few months or years...if I were your treating doctor, I would have advised your daughter to have prophylactic tablet
betacap for 3 months daily and tablet rizact in case of acute migraine attack...many patients are cured by this treatment...as all these are prescription drugs, so for that you need to consult a neurophysician....
I don't think surgeries will have any significant effects on migraine...so you can use that band, but at the same time stick to the migraine treatment prescribed by your doctor and be patient, there will definitely be inprovement in your daughter...
Hope this answers your question and please let me know any of your further question, I will be happy to help you in future also...