The real question is "do we want believable?" She's believable in the most unbelievable sense of it, just like everyone else. She's got enough quirks to make me want to pry and learn more, but she's cold and aloof enough to be a good bit unattainable. she's a challenge, and like with all the other characters, I want to personally learn more about her and what makes her tick.
Keep going how you're going with her because you're doing a perfect job. like I do with Bela, I'm refreshing obsessively to see progress.