Rei is a real reckless wild child - X-Games, standing out, and all that. She's pretty much fiercely independent - if at times a little wrapped in her own obsessions. Her idea of a great time is to do some kind of reckless trick like jumping off the the top of a coruscant building with only a repulsor belt to catch her somewhere at the bottom of her freefall. (which btw will be her intro)
She's mouthy, isn't afraid to voice her opinion when it suits her (but she's not tactless) and a strong independent thinker...she likes to think outside of the box and doesn't like conformity. She's willing to try anything at least once.
As much as she is obsessed with perfection, she finds imperfection part of that perfection - lol don't ask, its pretty confusing in a way. She prizes uniqueness.
She is the cool, sarcastic girl that likes to hang out with oddballs.
I think angry Jedi in the group will strike a familiar cord within her - she'll understand it. She'll also try to loosen up everyone else and encourage them to try new things.