Leftie... I can understand the urge to get in the last word. I have the same urges. I have resisted every urge to do so. I have resisted every urge to respond to her FB stuff before I blocked her off my news feed back in early May and her ultimately unfriending me and blocking me (she did me a favor and did not know it).
I want to say a lot of the same things to my w that you do. However, refer back to the conversation I had with myself... "What magic words could you possibly say to W that will miraculously make her see the light?" Uhmmmmmm. None.
I have a philosophy that maybe me not saying anything is actually getting in the last word. Having nothing to say can speak volumes.
“Things turn out best for the people who make the best out of the way things turn out” ― Art Linkletter