Almost every person I'd consider very good at and passionate about their job is different. I presume your judgement of her "passion" is based on her not fitting

Almost every person I'd consider very good at and passionate about their job is different. I presume your judgement of her "passion" is based on her not fitting in with the team's culture -- that's silly. How you dress, what music you listen to or even what you like to do outside the job has nothing to do with how good you are. It's even worse than that: although I think it's easier to tell whether someone is passionate about technology if they are obsessed with technology outside their job, that doesn't mean that is a necessary or even sufficient trait. This may sound disappointing, but even being a geek is not a requirement for being excellent at what you do, not even in tech.