Hi Lavendar
Not really sure of your son's story but if he is married to a baptised JW and he is not one (baptised), and yet he is a 'good' husband, she has no grounds to leave or divorce him, in fact I would think rather she would be encouraged to stay with him and try to 'win' him over by her good christian conduct - at least that was certainly the case when I was a JW and in the area I live in...............so maybe you should try to discourage him from getting baptised and tell him you have done some research about the organisation that lets him know she should not be threatening him with a 'join me or lose me' type scenario................then perhaps you could try to gently encourage him to visit a site like this for himself, using the argument that at least he should check out the other side of the story..........you could tell him its not what your trying to tell him but the experiences of many ex witnesses, with a vast array of stories from varied backgrounds........
I know I am slightly off your thread topic, but I cant see how she can be threatening him with some form of seperation if he does not become a JW unless it is on the grounds of physical harm, adultery or a threat to her spiritual strength.......
Good luck
Fi