I agree with zh: it takes time. You are doing fine, from what I can tell. Sure, it's tough (therapy is hard work, if you're doing it right)...

Keep your T... and continue to talk about it as you need to. You have told others... you've told us. No, maybe not the whole story (and if you choose to do that, be sure to use the "trigger" icon in case others aren't as far along in their journey as you.)...but you did tell us too.

This is a terrible thing that happened.. the true definition of PTSD in it being an overwhelming event, something we are unable to fully grasp or handle...

with any traumatic experience (including the death of a friend or relative that was "expected") the person working through it needs to tell the story over and over... to reframe how it is categorized in the brain. Finally, it will become filed in the correct place, and while still accessible, won't be intruding like it currently is.

Try to remind yourself that it isn't happening now...that when you are in your T's office and working on it, you are in a safe place... and able to view the whole experience. Obviously you are ready, or your brain (unconscience) wouldn't be allowing you to recall it even now.

Hang in there.