A, no idea really how to prepare for it, I'm not sure there is any blanket method... as all situations are people involved are so unique. I think all you can do is stay honest with yourself, talk about how you feel, what you feel, when you feel it, and work your way through it bit by bit. I believe its really just trial and error uniquely... I am sure you will work your way through this, but please remember, don't beat yourself up if you get ill as a result, as the stress caused would be immense to yourself at times, accept it, that is life with PTSD, though simply work your way through it and back to the surface once again.