Hi Quirky,
I have come late to this thread.. My wife is a diehard dub, at least toward the concept of it all & "The Organization" she has plenty of issues with the local congregation, but that does not seem to shake her faith. I faded almost ten years ago. I was at the time an elder. I conducted The WT Study, a group and was the Secretary , when I had my "Road to Damascus" awakening.
I had to fade, fast. It still took a while but I did quit eldership stopped reporting and have been "inactive" ever since. For me that is o k , The locals ignore me even though I still attend some meetings, entirely passive on my part. I do that to keep her company. A sister on her own has a hard time in dubland. It gives us something to do together on a Sunday & stops us going separate ways. Of course there are things that i would rather be doing, but it is good for our marriage . We have been married for over 30 years.
Our relationship is no worse or better than it ever was. She has got over the initial shock and fear that I was going to turn into some kind of monster, as she fears that all "worldly" men are at heart. She knows better than to blab to the Elders about my internet activities, having worked out that she is better off having me not d/f'd . The extended family try to ignore the fact that I am not a Witness and just carry on the same towards us.
So please take heart...If you can show your wife that you are reasonable, and nothing outside of the K Hall need change, perhaps she may accept the situation. I take heart myself from the experiences of those who are now joined outside by their wives, but I see no sign of that in my case.
NB If it is your wife that wants to separate , then she may be reasoned with on the basis of 1 Cor 7.13 in which she goes directly against the "Inspired word of God" ..If I were still an elder I would tell her so. The WT only says that separation may be a last resort if the unbeliever makes it physically impossible for her to practice the faith - and you are not doing that....
All the best...we wish you well.