I'm so sorry to hear this. From my experience, I fooled around with ortho's for years before I found a Neuro (who rightfully, should be treating rsd). Can you find a Good Neuro for her? One with RSD experience! This is where You must do the work for her! 'Fiery burning pain, and the mottling you describe are disturbing. This is not something you should wait on.
Best of results for you both!

Pete