I just wanted to add I was NOT being sarcastic. I really do hope the letter gets your wife thinking in way that she comes back to because of the person you've become.
I don't think you want her to come back b/c of pressure or fear alone.
I guess I would have just worded what you said differently, if I was going to write something like that. For example, I wouldn't have used the world "detach" in an email.
I won't judge you for being lawerly.
Patience is bitter, but its fruit is sweet. --Jean Jacques Rousseau.