I would tell you the same thing that I told Country... go dark as possible. If she asks how your D is, respond with a polite, but VERY short, answer. Don't send a picture. I assume that she sees your D, right? So your W isn't going to forget what her D looks like. If she wants to see her D every day, well then, she shouldn't have left the M and had an A. That's the way that I see your sitch right now.
FB can be good and bad IMO. It provides a window into the WAS's life, which yes, can be gut wrenching. But it also provides the WAS a window into the LBS's life. You can use this to your benefit if you are GAL. You can post pictures or messages that show that you are JUST FINE on your own and that you ARE have a good life without your W. This can cause the WAS to become curious about what you are doing. This is good and something you want to have happen.
Only you can decide whether or not you can stomach what you see or read looking through the window. If you can't, then get off FB. But I would try to deal with it so that you can use the benefits of the FB window INTO your life. It was a powerful tool in my sitch... but I didn't have to deal with anything bad looking into my W's life either.
BITS Denver
M 43 X 38 T 13 W moves out of home 11/2010 Roller coaster from hell 2/2011-5/2012 I request divorce 5/2012 W moves home 6/2012 Good time 7/2012 - 1/2015 I leave 3/2016 process of divorce