Hey Snowydaykids,
My son's MRI was normal also but from what I understand it usually is. He is seeing a neuropsychologist tomorrow to check some of the cognitive issues. He has the same symptoms as your duaghter. His sports dr didn't think the Impact test was reliable for his age so referred him to be tested by the neuropych. A football teammate of my son's that had a hairline skull fracture and concussion has only been to school for an hour a day and has 1 hr of at-home tutoring, since it happened 5 weeks ago, and will continue this until December per the neuropsychologist. Don't think it's migraines, but post-concussion headaches. My son never got headaches before either. He is still getting really bad ones when he tries to write, do math or is in a light or nosiy environment. Hang in there, it's difficult!