One skill you will need to master for yourself and your R is
PATIENCE.
Putting a stopper in that bottle of emotions and waiting for the brew to mellow. (The bottle probably has a label on it that says STFU!)
This DBing is counterintuitive. What "feels" right often is wrong, and from your story you have been mostly operating from an emotional, rather than an intellectual, perspective.
How you feel IS important, but it should not dictate your actions now. Find other ways to process your emotions that are constructive; with a support group, therapist, or here on this board.
Don't hand them over to a person who isn't going to know what to do with them right now. That's pressure on her and she doesn't need that complication. Think about what SHE might need now, not about your own pain. That will work in your favor all around.
Think about what you want to accomplish with this letter and why. Then run through all the possible reactions you might get.
Unburdening yourself might feel like a relief, but the effect might not be worth it!
------GGG
Me 54 Him 63 M 23 T 29 0 Kids Funny Farm of Rescues 12/12 OW-- 5/13 ILYBINILWY: A denied 9/13 Proof OW: ENDED 2/14 Got D papers on my BD I kicked him out for my sanity 9/14 He wants to "talk"?