ot in lieu of pm. Some use "paleo diet" as a guide and find relief. Dietary factors often ignored. Interestingly, excess iron could be a factor. 

Much higher incidence noted among N. Americans and N. Europeans compared to those of Asia including Japan. During WWII, meat was rationed domestically in US; sharp drop in said problem.

Also, the gluten factor: It seemed like hype to sell books. However, they've monkeyed with the genetics of wheat grown in US in line with insect and disease resistance; the tampering may be having untoward effects.

Don't forget oatmeal is a great food.

Change in diet with these guideposts in mind. Might help her. Might not. Can't hurt.