Vin, I had the same problem and the ENT was always initially alarmed when I showed up for a scheduled check up with lesions on my tongue. Because one side of my tongue and surrounding tissue is partially numb, I wasn't aware I was doing this. Using a Breath-Right nasal strip keeps my mouth closed at night. This might work for your wife. I add my congratulations that it all worked out so well. If only we knew when worry was warranted, we could save ourselves a lot of trouble!