Hi LBH. Sorry to hear of your situation. Could you describe a bit more why you think she is a WAW? Has she actually moved out? Sorry if you described this, but it's unclear to me what actually happened. I take it as a good sign she is looking for MC and talking to you about her doubts, and spending time with you.
I thought the letter, as you described it, given her expressing doubts, was perfectly fine. Of curse, you will need to follow through, and just be patient, no pressure, etc, now that you've sent it.
And I'm not really sure the LRT is applicable here, especially if you were distant in your marriage. Look for ways of conitnuing to show her the better you. This might be to actually engage her more, in positive ways of course.
H: 38 xW: 38 M: 16 T: 18 S: 9 BD: 2/2012 W moved out 4/2012 D: 11/2012