When you said your W, was thinking of someone other than herself, I guess that is what she wanted you to think, whether that was really her intent,or not. It is a sign that she cares about what you still think of her, must be her, as you said, wanting to have a friendship with you that right now, that doesn't exist. Just take it for what it's worth, but a friendship is the best way to go, and if she is willing then, all you have to do, is be open to be willing too. I know it is hard right now, I mean you are still dealing with the A. So allow yourself to be mad, but be willing to let it go, it will in time. Remember it is better to part as friends, then enemies, or strangers.
Just thought of something, it sounds like your W's conscience may be getting the better of her, and being friends with you, will make her feel in her mind, less guilty, just a thought, though.
And Yes, I agree with your boss, Make em all, squirm, including your W, as you know that is what I trying to do, now. Don't show your hand, till you are ready to win the pot.
When do you leave for vacation? Probably given the sitch, not soon enough, Have a wonderful time, relax, and let all of this stuff with the D, just pass you by, for that time, anyway. Take care.