I recently read an article about Mg deficiency and migraines. Have you had your nieces Magnesium levels checked? The best way for this is intracellular, but you could start with serum. Tho the body everything it can to keep the blood balanced, to the disadvantage of the cells. It's done just like a DNA swab under the tongue. If you like I will look up the lab I did this with.
Edy
