I quit smoking a month before I quit drinking and sometimes when I'm super stressed or want the excuse to leave a crowd to go smoke (hooray for social anxiety!), I think for a moment "damn, I could really use a smoke right now", but I'm luckily able to disregard the impulse as quickly as it appears heh.
I hope your wife's cravings are as easily dismissed as mine and that, unlike me, she can do so without instinctively scolding herself lol
Easily dismissed enough that I didn't even know she had waking cravings until we were visiting her mom's a couple days ago and she was talking about it. She says it's a really quick moment and then it's gone.
Which is funny to me because with my weird medical issue that I believe you're aware of, that's how hunger is for me. It's like I've lost my addiction to food.