i have kept a lot of the details very open-ended so i can work with whomever is filling the line! they would have to be cousins. devi's family has been on scheria for generations, i have in mind that they live in a little enclave that was first part of the terraforming mission on the planet that came from the brit-indian population of the uk on earth centuries ago (hence why dev has a brit accent in space), and i would prefer it if your gal was also from scheria so they could have been close growing up, but even if you want to say they branched out to another planet, they could have been anyway, given how easy space travel is. both devi's parents have a couple of other siblings, so they can be paternal or maternal cousins. her family was big time glf sympathizers that raised dev and her twin brother to be essentially the same, so if you went that route, it would be nice to have a living relative she was close to, but i also think it would be fun to explore a dynamic if they had opposite alliances, not that it would matter now. i'm just very open! also if you did make her the transporter on the wayfarer, that would be delightful because ~raybeam is devi's mentor and she jokes that he's her dad now.