Gerda does not agree with her beloved DnJ's imagined convo but I don't have time to write at the moment so I just wanted to say --
First rule -- wait as long as possible to respond to the MLCer at all. He will flip and flop six hundred times anyway so let him spiral and give yourself many days to let your own notions sift. If possible, everytime you think about it, say, "Nope, not going to think about that!" and remember a beautiful waterfall or quickly go to look at a Redon painting. In Christian land, we also say, "NOPE, NOT TODAY, SATAN!" because all despair and anxiety comes from the darkness. So my advice is do nothing for two days and try not to think about it (I know, impossible, but try). Then in two days you can craft a response. And then another day or two. Then edit. Then send.
I personally think all verbal communication should cease. All in writing. My file of these settlement convos was a great exhibit to use in a motion to show how hard I tried to settle and how insane H was.
I believe I will see the bounty of the Lord in the land of the living. Wait for the Lord with courage. Be stouthearted, and wait for the Lord.