Worried she'll just misunderstand me again

First thing, no medical professionals should insist on anything, if they do then make a complaint. There are no herbal remedies for anxiety or depression, there simply aren't. A better alternative is to ask for psychotherapy, it's a much better alternative and works well. There is no way anyone can tell you about stoping flashbacks, a psychotherapist can help

No one has a right to insist you take anything you don't feel works for you. The problem with pharma meds for PTSD is they wear off over itme. Klonipin wears off over time, never ever stop cold turkey, etc and zoloft gives restless leg syndrome plus terrible w/d effects even titrating slowly.

I hope you can have a good relationship with your medical team; remember you are never alone. 

Have you considered Neurofeedback, with the mindmapping?  I think this is  new emerging management when medicines do not work.  Also meditation can be used with the news apps and the MUSE system. IF you disicplined and want to help yourself bad enough.

 I speak as if I have never had the gut wrenching puking nightmarish shivering shaking hiding running avoiding freezing pain of ptsd.  My pollyanish personality overshadows sometimes; keep the faith. Remeber, you're never alone.