Go out to a U-Haul store and buy a bunch of boxes. Can't afford? Go get empty boxes somewhere.
Put the boxes in a place where she will see them.
Just plant the boxes and let em sit.
IF she asks, what the boxes are for, Calmly WITH Strength tell her "I don't know yet, but until I know I'm not living in an open marriage I'm preparing for the choice I'm going to have to make". Then walk away and do your normal thing. IF she pursues with questions, just say "I do not want to talk about this right now". Leave the house if you have to.
You want to do something differently Johnnie? Do this.
Let her wonder for a change what YOU are doing. I'm tired of seeing you in pain and focusing on the "what if's"; "what do I do" "why why why"; You want a reaction, follow the instructions above and keep acting "as if" nothing is wrong. You need to find empowerment. You need confidence Johnnie.