6 weeks isn't a long term therapy.
I believe you could have chronic intracellular candidiasis. This is a residual infection that penetrate deep in the tissues and cause redness, burning, and inflammation. This infection isn't totally active but is the result of candida penetrating the cells after a drop in cell-mediated immunity. It is a hard to treat chronic infection that require systemic antifungal drugs. Since most (if not all) current systemic oral antifungals are fungistatic, you should try a drug combination such as Terbinafine/Itraconazole. This combination is synergistic and have been tested effective against resistant candidiasis. Consult it with your Dr or even Dr. Crandall. She is well aware of it. I believe you should follow Dr. Crandall. Allergic shots are important if you test positive against candida antigen (skin test) Most women with chronic vulvodinia what really have is this chronic atrophy candidiasis. You are in good hands with Dr. Crandall. I believe nobody knows better than her what is affecting you.
Good Luck,
Jorge.