I think what you are seeing here is that many of us have been through trauma work, and no two of us have had exactly the same experience. It is a very individual process. To me, spending 12 weeks working on one trauma event seems WAY too much. To others, that doesn't seem enough. Your t is probably giving you a pretty good estimate based on her experience. I doubt that at 12 weeks she would say, "Okay, your 12 weeks are up. You're healed." If that isn't the case. Try not to get too far ahead of yourself. Let the process be the process. A day at a time.