Hi Gizmo,
This is really good work you're doing here, even though it feels terrible. Everything you've said I can relate to, as my own process has been pretty much as you described it in your opening post. Some days I spend all day on the internet trying in vain to distract myself from the sadness I fear may overwhelm me, even though I've been through plenty of crying in the past anyway.
I've been getting the inner guidance to write a letter as well, as the feelings of betrayal have been coming up lately, but have still not gotten to it yet. It will come, but I just wanted to say that it's important to listen to your body in all this, as deep processing is really hard work, and it takes so much out of us emotionally, which in turn takes it out of us physically...so, if your body is calling out for a nap, give into it instead of resisting it due to any feelings of guilt or thinking you have to keep going.
When we sleep and rest, is when our bodies have a chance to heal, and since these emotions are stored in the body and are starting to surface, I think it's wise to really pay close attention to drinking lots of water and resting as much as possible and practical.
And this thread has been a great support to me as well, and full of wonderful advice.