Do you know what type of exposure therapy you are doing? Have you done any research on the effects and effectiveness of this type of exposure therapy? I only did a quick search of e.t. in general, but it all sounds like a very painful process, though apparently fruitful for many especially for PTSD. One thing that I did notice is that there aren't a whole lot of therapists with the required specialized training in exposure therapy. You might consider asking your t the extent of exposure therapy training she does have if you haven't already. Knowing what type of e.t. your t is using could also help you better search out the answers you are looking for. You might even want to consult with a specialized trained exposure therapist on this also to make sure you are in good hands with your current t and that she is doing things right. You are incredibly brave for going through the exposure therapy process.