I am so sorry to hear that. My sister is the same and has awful migraines. There is an old wifes tale that says each morning before eating take one spoon of olive oil with lemon. It is a preventive. I read the other day about some things and will get back to you on that. Look go to the health food store and buy some fresh ginger and some black cumin. Shred the ginger about one inch and put it in the mortar with 1 t. of the black cumin and grind to a pulb and eat this. It taste terrible but it will calm her nerves and put her to sleep. Also buy some anise seeds and make a tea out of this and put some fresh mint in the tea. Put a large amount like 2 tablespoons. I use to have migraines years ago and had them for 15 years so I know she is suffering. I will get back to you. I just posted a site on eft so look at that and I will download a tapping exercise for you and your wife. Allah be with you both.