As the lady above wrote, it is very frustrating and it may seem like you've tried everything, but one year isn't long enough to try even most things available.  There are also treatments other than just medication.  I have tried most meds that I can try (allergic to a lot of meds and struggling for 10 years), so I have gone down other avenues. 

Botox injections, chiropractor, physical therapy, acupuncture?  They all worked on some scale for me.

Diet changes to control possible triggers such as peanuts, pork, onion, hard cheeses, citrus, peas, leavened breads/crackers, etc?

It may be too early for this kind of diagnosis, but there is a huge correlation (70%) between untreated/unsuccessfully treated migraine and depression.  Has she been evaluated for depression?  If depression (resulting from migraine) is treated and gets better, often so do your migraines.

Other than the traditional abortive meds, injections such as nonsteroidal anti-inflammatory drugs (NSAIDs) to control irritation that can happen with periods of sustained migraine?  Sometimes that's all that keeps me from going to the hospital--of course, they're intramuscular so not as easy to administer as an Imitrex injection.