catfan, I read a post by a moderator who calls it going 'dim'. It's difficult for people in my sitch to initiate some chitchat when it is unclear if the WA would engage in phone conversations you describe. Specifically, in my case, I know she will bring up lawyer talk and such just after warping my mind with bits and pieces of hope. It's almost like if we talk to long she will revert to topics of doom. I guess what I am trying to do now is to find a way to get to this stage.
Also, at first going dark was to simply leave her alone and remove myself from her. But after awhile, I realize that, for me, it is more about detaching yourself from the situation while you GAL, your 180's, and in short get yourself in a better place. LOVINGLY detaching in my mind is then to use what little interaction you have to rebuild at first a friendship on their terms on their timetable.