Inabunker welcome to the site. It's not an easy task to get out of the JW cocoon, so many restraining threads of connection have to be cut through to become free.
With the blood matter, the GB have developed a cunning plan to mark those who are gullible enough to give their lives to the organisation. If you are prepared to literally sacrifice yourself or your children in obedience to them; you are counted as being "in". Hence the demand for documentation, to put it in writing. Such extreme loyalty in a cult is a capital resource.
In the JW cult, the paramount doctrine is total rank and file obedience to the leadership because on this, their survival, their power and their prestige depends. God's spirit has nothing to do with anything! The JW org now is all about the leadership...it's nauseating isn't it?
I do hope you can reveal TTATT (the truth about the truth) to your wife in a way which does not alienate her. Wishing you all the best in your escape.