She's not open to God's message right now (or anyone else's for that matter...). So you really have to let her go for now. It doesn't mean you are giving up and it doesn't mean you love her and wouldn't prefer to have your family together, it's just that you HAVE to give up control of this whole thing.
That's weird that she wants you to go out with co-workers. My guess is she's trying to assage her own guilt. I would just tell her it's your life and you will make your choices on how to live it. Doing fun things with the kids that she might want to join sounds like a good choice.
And gosh! don't stop looking like a "model" when you do go to work. Even if you aren't trying to attract women it's good for self-esteem and will let her see the great thing she could potentially lose. Next time she comments on how good you look just wink and tell her all the women tell you that. I know that isn't who you are about, but a little bit of humor and even a tiny bit of "mystery" is always good.
Do 180s you feel comfortable with, but don't be afraid to extend yourself a little. She probably sees you as boring. Think of things that might make you more interesting without compromising your values. Join a gym and work out after work (great for self-esteem, and pumping up the endorphins so you feel happier and less stressed). Maybe get a Harley.
Only kidding about the Harley!
There is no arriving, ever. It is all a continual becoming.
