Andrea,
I am so sorry you are having such a struggle with Allison and her treatment. It would seem that she is not getting the multidisciplinary services that are really required to have the best chance of remission or cure.
She is so young and her RSD/CRPS is relatively new that she would really benefit from a 'team approach' to her care.
I think your idea of going to see the specialist pain centre is a great one.
It is no wonder she is so tense-- the poor girl is watching life from the sidelines, this is hard to do as an adult so I can't imagine how it feels for someone with their life ahead of them.
So many of her symptoms are going to be exaccerbated by her stress levels, I do hope that perhaps a whole new approach from a new team might be the answer.
Wishing you heaps of luck
Tayla