hi i also had the same problem when growing up, I am now 32 but the headaches were really bad to the point i was throwing up and my head hurt like i was shot in the head or like my head had just exploded, Doctors couldnt tell me anything that was causing them but i was prescribed Fioricet and man let me tell you it is the best thing for them kinds of headaches *SO ASK YOU DOCTOR ABOUT THEM* and i dont get them really anymore now....THANK GOD....but i also had some MRI's done and was found to have some leisions and a pituitary tumor, still waiting to see doctor,..... also the headaches can also be caused by a food allergy like food dies.....get checked!!!! But i do recommend the FIORICET, your headache will be gone in like 15 minutes...
Why the second MRI?
She needs to see a pituitary endocrinologist and get tests. They need to determine what type of tumor it is and to do that, testing is required. Once that is determined, then treatment can be determined. Many now can be treated with medications, but some need surgical intervention (via the nose, no scars).
She should also see an eye doc - a neuro-opthomologist and get some visual fields to make sure here eyes are ok.
If she gets treated correctly and promptly, she should be fine - but if she gets in with an endummy who tells her to ingore things, then she may end up like me, and that is not healthy. Get copies of everything, learn, and ask, walk away if they are treating you like dirt.