I wouldn't bet on the fact that when you return you will return to the same ole thing. A lot of time has past so far and there is a lot more to go. In that time so much has happened and will happen there is absolutely no way of speculating on what it'll be like when you return.
So what to expect? The best thing is to have no expectations of your wife. Expect to move on with your life, being the best FLTC you can be, being the best father you can be. In other words only expect to control and worry about you and your kids. Let your wife worry about herself. Any worry you have for her you need to turn over to God and let him handle it for you.
As for your kids, focus on being the best father you can be for them. That's all they want from you, your love, your support, your leadership. Sure at times it's hard and you have to be the bad guy but parenting isn't always fun and you definitely know that. But if you do it all with love then in the end it'll all come out good.
Now reading back to some of your recent posts about interactions it does sound like your wife is softening ever so slightly. That's a good sign if there ever was one. It may not lead to the ultimate goal but it might lead to less stress, less conflict and less pain. So that too is a positive.
Bottom line right now, you can't worry about all this stuff. You have a hell of a lot of other things you need to be worrying about right now.
If we really want to love, we must learn how to forgive. - Mother Theresa