Hi Corinne,
If she is still having flea allergy dermatitis, but is now on raw, then I would wonder if Xiao Chai Hu Tang is the best choice for her. Cats don't always need the Blood tonifying and moving components of Cessorex, so Xiao Chai Hu Tang might suffice. It fits the toned pulse and the red tongue, and is immune modulating to help reduce systemic immune responses (i.e., hypersensitivity) to fleas. Reduced sensitivity means reduced skin blood flow, which means fewer fleas can be supported by the cat, since blood meals are harder to find.
Hopefully that makes sense! Let us know how it goes!
Steve