My W has been telling me we are getting D for 8 months. No action just talk. We were nc for about 6 months, and sleeping in the same bed. My kids are adults so the NC was somewhat easier. I would ignore her texts and FB as well. She is probably too depressed to carry thru with the action of divorce. She also deep down doesn't want it. I know it is hard because she keeps telling you she does. You can validate her feelings if you must by I personally like the NC approach to communicate your displeasure with this idea.
My wife posted the following on her Facebook page yesterday:
"Life is like a box of chocolates. You never know what you're gonna get." And there are times when you take a bite of one and decide that you don't want that one so you put the half eaten one back in the box only to realize later that was the piece you really wanted to begin with.
I'm grounded enough to know that she isn't necessarily talking about me but I am encouraged that she is thinking this way. She's housesitting at her Mom's and I took the kids out to her. We talked for a bit. Normal stuff. I then proceeded to get my car stuck in the driveway. Her and I worked for over an hour to get it out. She finally used her stepdad's truck to pull me out. I texted her on the way home "You're really awesome." and she texted back "Thanks you too."