Hi vertex, I am sorry for the pain that you are going through.
But there is one thing I can help you with - unfriend your W from FB, this is basic DB'ing. Every time you look at her page/posts, you are inflicting pain on yourself. By seeing what your W is doing, who she is "friending", etc., you are letting her words (which you can't trust anyway) cause you pain. And the "mind-reading" based on what you saw? You know that this also isn't helpful.
