20, I don't know what the vets would say. Some would say bring the A into the open. For me, I would simply GAL, 180, PMA, and get out of her way. Instead focus all of your attention and energy on yourself and the kids. Sometimes when an A is called out, it brings the spouse out of it sooner, but sometimes it blows everything up and the spouse walks away. So don't be in a hurry. As long as you can tolerate the situation, maybe just sit on the information for now and see how things evolve. See if she responds to your changes.
Being mysterious can be as easy as saying that you'll be home a bit later tonight, or that you have to leave somewhere early. Just don't provide information about what you're doing unless asked. And even then you don't have to provide details. Just go about "as if" and allow yourself time to grow on your own and detach as well.
M: 43 H: 39 D: 14 Married 15 Together 16 BD: 6/2014 S: 8/2014 OW revealed 10/2014 Instigated dissolution 12/2014, in progress So over it!