I think your letter was excellent well written from a christian viewpoint.Personally I have a problem with the name Jehovah in the Christian Greek Scriptures that you quote in your DA letter however.
I would have made the point that the Tetragrammaton or the equivalent Greek letters representing the Tetragrammaton / name of God does not appear in the Greek text that the WTB&TS use for their basis of the NWT of the Greek Scriptures .
See the Kingdom Interlinear Of The Christian Greek Scriptures a word for word translation of the Greek into English published by the WTB&TS .
That name Jehovah / Yahweh nor any other name for God does not exist in the Greek text.
None of the Bible writers of the Greek text use any name for God and even Jesus never used a personal name for God
Jesus never uttered the word / name Jehovah and he certainly had more than one opportunity to do so had he thought it was of any importance.
Just my 2 cents worth.