I don't think she cares to be married to you anymore. Her 5 love languages consist of bending down 4 fingers until only the 5th/middle one is showing.
You should definitely stop what you're doing and let her and you (and your kids as well) get on with life. One week with mum, one week with dad; stay close geographically and don't bring your kids into the adults war.EVER. Not overtly, and not covertly. In fact don't have a war if you can help it.
The kids will be much better off than they are now. They aren't stupid you know.