Ballast, sounds like you are doing fine, there is certainly nothing fun about going through this and sometimes just putting one foot in front of the other is all we can think about. Very tough not having D all the time but it gets better, I promise. You'll learn to make the most of the time you do have together, and to fill the time you don't have her with personal activities.
Regarding the convo with W, if she wants to keep talking then it's OK to chat and listen. Just avoid any R talk. Friendly neighbor!