Hi Tree! Thinking of you as you go through this hard time and the future seems so uncertain.
I hear what you are saying about the Dobson letter. I'd say write it, but dont give it to her yet. Wait at least 2 weeks (if not longer) and then re-read it. You will be suprised at how much your ideas will have changed in 2 weeks. I too wrote the Dobson letter, but I'm so glad I never sent it! It actually makes me shudder a bit to think what H would have thought if he got it, cause its no longer a reflection of how I think about him, separation or our marriage. I think the Dobson letter is a stage in this process, but its not effective as GAL and doing some 180's and concentrating on you!!
You know that you are still searching for an answer to 'fix' the relationship hey?
If you love her and want to set her free one of the worst ways of doing it is to tell her (e.g. the Dobson letter) the best way is to show her through your actions.