That answers your question on if you should give it to her or not. I understand, I still have an email in my draft folder that I wrote several months ago. Will it make you feel better? Maybe. Will it have an impact? Maybe. Will it be a positive one? Who knows. The question is will giving her the letter bring you closer to your goal? BTW there are people who have reconciled after D. If that is something you still want your journey is not over.

Me-44 (45)
H- 50 (51)
M-'96

S-18(20)D-15(17)D-12(14)

BD Feb 2014 (he works overseas)
home Oct(sep rooms)
(EAs possible Pa's unconfirmed)
insists wants D through July 2015
no more talk of D since