Sorry for the delay in reply.
I heart goes out to your for your daughters pain.
There are cases where artificial ingredients, processed food [processed cheese product; is not cheese i.e.], food dyes, yellow, red and blue have caused migraines in children and adults.
Since I am obviously not aware of the diet this is my suggestion. Perhaps see a nutritionist, keep track of what she eats and the pain, see if you can find a pattern. You should do this with all things actually.
Pain hits, what was she doing before, a few hours early? Weather, barameter going down things like that.
Other than that, perhaps, a diagnostic neurologist. get a better handle of what you are dealing with. I went to John Hopkins in 2008.
Peace and Strength
Moderator - Depression
"...when the gift of sight is cause enough for jubilation."
Billy Collins from the poem. HIGH
DX: reverse Trigeminal Neuralgia;Cluster headaches; Atypical face pain;Hemicrania Continua; raynauds;complex PTSD; recurring MDD,disassociative disorder;