nothing earth shattering I am afraid. Stay as cool as possible, Wear and use natural fibre clothing and bed linen. Try giving up or greatly reducing spicy foods, alcohol and sugar. Some people (not me sadly) have found that sage tea, red clover or black cohosh have helped.
I find being absolutely up front about it helps rather than trying to hide it. Certainly i find that stress and being in a hurry make it worse although its not always easy to avoid these.
I am afraid that mainly i just use a mantra "This, too shall pass"
Your wife has my sympathy. I have had them for about 10 years now. They were worst at the beginning when they were accompanied by dizzy spells