She would be quiet, maybe a little bit shy at times.
Would pretty much ignore you, voice would be really quiet and/or scratchy if she spoke, kind of languidly shuffles around. Seems kind of blank most of the time. Really to-the-point and probably blunt if she does talk.
Very reserved and not friendly or empathetic but only because of a difficult and isolated life. When by herself she's impulsive, creative, adventurous
I picture her as the poster child for Schizoid personality disorder.
id imagine shed be a tsundere, if you on know what that means, that means shed be very rude for a while, but once you get to know her she is actually very nice.
id also imagine (this ones almost a given)shes very depressed