I'm sorry you're going through this. How old is your wife? I see your kids are pretty young. Does she usually contact them when away for business trips? I kind of feel like your wife might be about to have a midlife crisis, just because of her attitude towards the kids while away from home, but I don't have enough info about how she normally is.
I would really work hard on yourself. Get your anxiety under control, and validate your wife's feelings. That should help lots. Don't let your guard down just because she seems remorseful. She's likely still looking to make an exit.
