I myself suffer from a similar problem, though I am sure smoking cigarettes in my youth certainly didn't help. I would recommend the Mrs. trying the THC tincture or has she tried BHO extracts? BHO delivers a powerful, vaporized hit meaning she could be taken care of with one hit and you can purchase BHO smoking equipment now far cheaper than some of the electric vaporizers out there. I personally used the "iolite" but I just kept wearing them out and they deliver such a low potency hit, I would have to run it for long periods of time, which eventually would kill them in almost 6 months to the day. WIth BHO I take one tasty hit and I'm out the door!! If you live in a legal state you can ask for more information and a demonstration of equipment at a local dispensary.