True detachment involves no contact with WAS, in my mind. Honestly, why do you need to talk?
Pick some random friend - if they started insulting you, disrespecting you, telling you how awful you were, taking advantage of you - how much time would you give them?
That's a good way to look at W at this point - she is doing all of these things, and you are throwing yourself on the floor for table scraps.
If you call to talk to D3, make that very clear when she answers the phone: "I called to say good night to D3 - can you put her on?" Then, tell D3 good bye, and hang up!
Do keep up the goodnight call, but limit it to that.
My W went for almost 6 weeks with almost zero contact, but has now started totally calling me all the time because I completely left her alone.
So, maybe six weeks it is! Just gotta steel yourself - when you find yourself typing that text, making the call, sending the email, walk away from the phone/computer. Go make a sandwich.
Even when I have a good reason to send an email, I typically make myself even sleep on it overnight, and alot of times the next morning I say, "You know, this isn't really going to serve a purpose" and I delete it.
If W calls you and initiates a conversation, that's fine. However, even then I would suggest being friendly, but find some reason to cut the conversation short - laundry that needs folding, floor that needs mopped, clients to call. Just something that shows you are so busy you just really don't have time to chit-chat.
