Thank you, 25. I'm glad you said all of that because I was surely on my way to creating an enumerated list of all that I did wrong. OTOH, do I want this to be "baby come back" letter? If the answer is "yes", at least thematically, I can handle it. I just do not want to sound like I am pleading or begging or simply asking her to come home rather than sharing what I have learned.
Ultimately, I guess I don't want her to react in a manner that says, "this is BS, you're saying all of this to get me to change my mind and I already told you that I'm done!". Granted, I can't control that - but I want her to grasp how serious I am and realize this isn't the same as the letters I left her pre DB.