jks, Sorry to see you hurting so much. My wife has also rejected our faith since she left, its been very hard for me to deal with b/c i've always considered her a "better" person than me and now to watch her not care is painful. She may still believe, but hasn't been to a service since so I dont know where she is really.
And I think thats the point, just keep working on you, I too have had feelings recently that it may be pointless and maybe I should just tell her I agree with her and lets get the D over with and move along, but until your really at that point mentally its not time. I have brief thoughts of it, but know in my heart im not there yet.
As for the emotionless spouse, my wife is a very emotional person, but lately with me shows nothing. Its either the best poker face ever, or she's over it. I dont know which and won't try to mind read, but I had a really good friend tell me the other day that no matter how she looks out with friends, or how she acts around me, in their quiet moments, they at least have to question if this is right. And thats why you GAL, move forward for yourself, and maybe in one of those quiet moments when they think about things.....they see you differently from when they left.
If your angry, bitter, resentful, pursuing....any of those things and they have that quiet moment of reflection thats what they see you being today and it only reinforces to them that they've made the right decision.