I can pretty much see the real underlying reason why you want to send out the letter to W. You're feeling antsy pantsy for a "closure" now that you are transitioning to a new chapter in your life with the new transfer.
To me, that is reactive and serves no purpose to W since your marriage is pretty much DOA. Your W is long gone into the mist and you really need to LET HER GO.
I am all for LBSes writing letters as a part of cathartic exercise and putting these letters away [or burning them]. Good gosh, I've written several letters to Ms. Wonka, post DR, and tore them all up. It served two main purposes for me: 1) clearing away pent up anger, bewilderment, confusion, sadness 2) kept me AWAY from the pursuing itch!
Sure, do this for yourself, HWA. I would not recommend that you send that letter to your W.
Continue working on yourself and progressing toward discovering inner peace. One step at a time, mate!
