Harry, I agree with NOP on this one. It is very hard to lose weight when looking at what your family typically eats and thinking to yourself, I'll never be able to join them again!
Plus, she obviously fears FAILURE more than anything else in this world. FAILURE strikes fear in her heart. Have I mentioned that FAILURE seems to terrify your wife?
She wants you to do it with her so that her chances for success are optimized.
To you I say: What would it hurt?
Or, do this. Tell her you don't want to attend meetings but you will happily help her figure out the points for the family meal so that she can determine her portion size.
I don't eat "special" foods. I eat whatever my family is eating, including dining out. I just have to be VERY careful with my other meals, which is a happy tradeoff for me. I, too, have tried to show my husband my WW materials and he was most uninterested. It really hurt my feelings, to tell ya the truth! I have been doing this for 3 solid months now. If your wife has any significant amount of weight to lose, she will be doing this long term as well. So it would be in your best interest to take an interest in her long term interest.
Honeypot, who seriously needs some adult interaction today.