Lavender Updated Concept Art 2017

Well, what do you expect? Lavy here and Aiden are twins so I pretty much tweaked the latter's lineart into this. The coloring on the other hand was done from scratch.

Lavy being more of an arguably prim and proper type of person, maintained her long hime-cut hairstyle.
Her outfit was a derivation of a kimono, though in order to follow up with the usual Nomura trend, "belts and chains".
Similar to her sister that bears the flower motive, Lavy has her association with butterflies as seen with on her garb and her Keyblade.
That's her Keyblade already in its evolved state.

We won't really see much of her due to the fact Lavy being dead is what kickstarted the plot.
This person is the one that saved Zenith as a child from being abducted by those recruiting children to be Keyblade soldiers through questionable means.
Lavy and Aiden later adopted Zenith as their youngest sibling and to help him defend himself, inevitably they taught him how to wield a Keyblade.