GTTM: Soo sorry you are going thru this and I will pray for you.... You say your wife never was one to express feelings and emotions very well but I can assure you she feels it inside. Remember she associates this religion with all the dynamics you as a husband should be, perhaps in her mind she feels like you abandon her... As a woman myself especially around/within a religion were dictates the dynamics of your marriage & family life and all of a sudden my partner in life is no longer there (just viewing it in her shoes) I would feel like I have no more support system especially spiritual, which this religion, ingrains in JWs, remember she views everything as JWs in what a "spiritual husband" should do in all aspects of your family life. You need to show her that your beliefs are separate from your love, morals and care as a Man, Husband and Father.... You need to demonstrate to her that no matter what you believe YOUR LOVE FOR HER and the person you are INSIDE DOES NOT change, actually you can demonstrate her that it makes you even a better husband & family man.
Remember in her eyes everything is connected to this religion, so you need to demonstrate that it is not connected and it doesn't change the wonderful husband you are. That being said, go back to the room with her and sleep in the same bed, cuddle with her, demonstrate your affection, even me as angry I have been with my husband due to an argument if he hugs me I can't resist.... and when you see her around the house give her kisses on the check and as you passby eachother touch her arm, waist-human contact.... and at times if she is standing preparing dinner or whatever, grab her by the hand, bring her close to you and say I am stealing a kiss from you and give her a kiss. Believe me every woman love men in love with her. Then on one night she doesn't have mts or JWs things ( so she doesn't think you are planning things on days of mtgs and being a "stumbling block" in her mind), surprise her with a romantic dinner at a nice restaurant, have plan what you want to discuss with her, NON JW things, and express to her when you first met and why you feel in love with her and tell her any funny moments you guys experience together when you were dating or early in your marriage, or when your kiddos growing up did funny things or cutie things.... believe me if you start taking steps of demonstrating her love she will see your efforts (she may or may not tell you but she will notice" and she will come to terms of just being in a marriage with an unbelieving mate and she still would have to be a submissive wife and contribute to the peace of the home and your marriage,... bring her a flower one day out of the blue and just say "just because it's Wednesday and giving one flower to another flower".... Not be easy but patience and time on your part you will have a better understanding and then at least you are doing your part. Hope everything goes well.