In the long line of designs and backstories I've used for Karina over the years, she's been half-Saiyan or full-blooded in several of them! Though she is in fact human in the current one, I wanted to see how her current design would look with Super Saiyan!
One neat detail I added is how her heterochromatia manifests --- the two tones are the manga tone for SSj eyes and the anime tone for SSj eyes!