Overall, this series is an interesting crossover, both visually and conceptually. It was clever to draw inspiration from not just the character herself, but in some cases her male counterpart or even the villain.
I think that, in comparison with the rest of the vectors in this series, this one didn't have as strong of a visual connection to the original source material. I see the poisoned apple, but that seems pretty minor in comparison to, say, Aurora's design drawing lots of parallels to Maleficent's design. I think that her costume could use some additional tweaks that wouldn't have hurt the overall white mage look - for instance, making her shoulders poofy and striped like the original costume, or adding a bow to her headgear (I think that in some Final Fantasy games the white mage can have a wizard's hat, and a bow would look cute there, but I could be wrong about the hat thing). There are probably tons of other ways to incorporate more of the source material into the design, but those were the ones I could think of off the top of my head.