A fork in the road - EA admitted by wife

[NYCPeter]

I'm not sure I view her overtures as a good sign - she may just be relieved the EA is out in the open and feels I have accepted the situation and am ready to move on with the D.

Question :
If she does see the L next week and files - how should I react when she tells me?
Was thinking along the lines of "Thanks for giving me a heads up. I recognize that this is a path you feel you need to go down and whilst I disagree with your decision I respect that you have every right to make the choices you want to make".