When I was a member of the Organization, (39 years), I remember every situation like this being given the same scriptural admonition;, "Win your wife/husband over, without a word".
The end results of 10, 20 , 30 years of this spriitual "silent treatment", can be alienation, unhappiness, wasted lives, and many times, the death of what God had joined together.
When married persons inter into a religion, they are , or should be made aware of the possible future issues that can, and probably will result when one disagrees with a portion, or all of the teachings of another's religion. Hindsight is truly 20-20.
The problem I have seen with Jehovah's witnesses is this; Regardless of the differences between husband or wife, the Witnesses never yield thier position, and the offended mate is eventually ousted, ignored, or exchanged for another, by indifference, intolerance, and impatience.
Inevitably, one of the mates seeks a release from the other, and that is when, after a time, fornication/pornea usually occurs. The "innocent" mate 9 times out of 10, is the Witness. The witnesses have a support group that most would envy, right or wrong, they are there for the remaining member, many times with an "available" replacement mate in the wings, while the one leaving is viewed as " was just not one of us", and also never received any loving assistance or help. It is this indifference to the marriage vows, that makes Jehovah's Witnesses guilty, at least in my mind, of coming between the God-sanctified relationship known as marriage.
I have also seen cases where the non-witness mate is cornered, attacked by the "friends", and over time is pushed into an emotional state of rebellion against the Witnesses, and a divorce is approved by the elder-body due to "endangerment to the spiritual life of the remaining Witness".
Ultimately, it is the leaving mate who is truly damaged, but who is also truly enlightened. One's "Christian conscience" is of greater worth than the losing of oneself to an unloving mate, a dominating organization, or brand of religious views.
Everyone wants to persue happiness and religious freedom. It is the ones promising this freedom, that when they fail to provide it, who will be responsible for the crushed and disassociated lives of millions of people. Anyone of us could be next, if you are not careful of who you put your trust in.....surely not, in "earthling man!"