Take a look at my progress chart -
1st week - great loss, mainly water
2nd week - 2lb on, ate what I wanted, literally - oops
4th week - 2lb on, stopped buying diet food, mmm, full fat food tastes delicious - oops
week before last - 1lb on, making lots of bread in my new breadmaker - oops
last week - 1lb on, beginning to get obsessed about food, just like being on a diet.
The rest of the time I just got on with it, not calorie counting, not spending a lot of time thinking about food.
I don't see this as a diet rather a way of life and although I've been doing this for nearly 3 months I'm still learning things about it and about myself. My attitude to food it changing and that is empowering and I think that is the key to success.
I know we are all different and I hope that your wife finds a way to get what she wants.
Finally - I've never joined a forum before, now I spend so much time on it that I completely forget about snacking.