I had my first migraine around age 8. I would come home from school with all the typical symptoms, intense headache, sensitivity to light and noise, and nausea. My mother didn't recognize them as migraines. She called them "hunger headaches" and assumed they would go away as soon as I ate dinner. As soon as I got home from school, I would climb into my bed and hide from the light. I closed my window shades, and stuck my head under my pillow. I was totally nauseated, so the though of eating dinner was totally gross. I never took any medication that I can remember, and usually after sleeping all night the headache would be gone. My mother just didn't realize how serious my headaches.
I finally started getting treatment at age 13. By then, I was getting jabbing pains in my head, like someone was stabbing me with an ice pick. The muscles connecting from my neck into my skull began to knot up into hard little bumps. This was always a pre-curser to a migraine starting. I was originally treated with Flexeril (a muscle relaxer) and Fiorinol w/codeine (a pain killer). This worked for several years, up until the middle of college.
It's now been 33 years of migraines, and they are now out of control. I've been searching out specialists for the past couple of years, and I've been referred to another specialist, who is a neurologist who concentrates on migraines. He works at the University of Virginia Medical Center, where I've been seen by a pain specialist. I've been through every medication used for migraines, and have gotten to the point where only narcotics will truly take away the pain. This is not a popular method with doctors, which is why I continue to search for answers.
My advise would be to see if your daughter can be put on some kind of preventative medication. Many choices are out there, but I'm not sure what can be used on someone that young. Please stay on top of the doctors, and if they aren't doing an adequate job of managing her migraines, look for another specialist.
Best of luck and let us know how things go.