It has been said time and again that writing long e-mails does not work. Tons of people have tried it and it gets them nowhere positive. I've tried it in a time of reactionary desperation and all it did was set me back and make my W want to talk to me even less. Others say the same thing.
Telling her why she shouldn't feel what she is feeling will only make her feel stronger about what she's feeling. It's textbook, that's just the way it is. Read through all the threads: these WAS types all act in very similar ways and pushing them in certain ways--like telling them they are wrong--yields very similar results.
So, take the advice of everyone whose tried this before: It almost certainly won't work in any positive way. Don't do it.
Me: 43 W: 41 Together 2009, Married 2011 Sons 10 and 6, Daughter 5 Bomb 2/21/21. W moved out 10/2021