Where most Mirialans are known for their spirituality and strong connection to the natural world, Reiya Velnax has always felt closest to some semblance of a higher power working on starfighters. The hangar, her temple. Schematics, her holy texts. She knows that's all probably blasphemous, but it's never fazed her.
Born shortly before the close of the Clone Wars, Reiya spent most of her early life in peace on Mirial as the inhabitants of the cold desert planet tried to avoid the attention of the Galactic Empire rising from the ashes of the Republic. Her mother served as a planetary defense pilot, mostly fending off pirate gangs and the like that slipped into Mirialan space. Her father was a physician. Reiya's passions split the difference, as she quickly fell in love with learning all the ins and outs of starfighters and diagnosing and treating their maintenance needs. As Reiya started working on their ships in her early teens, the defense force pilots quickly took to calling Reiya "Little Sister" and welcoming her to their family.
Through the years, Imperial oppression grew towards the Outer Rim, and staying out of the fight forever seemed impossible. But fear of overwhelming force kept ambitions in check for a while. It was only when they were galvanized by the Rebel victory at Yavin that Reiya, her mother and father, and several Mirialan pilots truly believed the Alliance had a chance. They joined soon after, and Reiya rose through the ranks as a starfighter mechanic.
As the B-Wing went into mainline production and made its way into Rebel squadrons, finding mechanics who could adapt to its more unique design philosophy proved a bit of a challenge. Hoping that perhaps a younger mechanical mind would be more pliable to the gyroscoping craft and its notoriously high-maintenance needs, Reiya was volunteered for the job within her task force. Immediately, the craft sang to her in a way few others could, and soon enough, she found herself promoted to official B-Wing crew chief duty.
Through to the Battle of Endor, Reiya continued to hone her craft, finding ways to squeeze a little extra power out of the engines, shields, and weapons systems to give her pilots every possible advantage in combat. After Endor, she jumped at the opportunity to work with Renegade Wing and keep pushing the fight to Imperial holdouts.
Knowing the B-Wing's weird architecture doesn't always make sense to those who fly them, Reiya has no issue dumbing down (or "translating") technical jargon for her pilots. She's also known to go round for round with the Renegades at the bar in her off hours.