Reallythere is no one way of playing a high wis, good int, 8 cha character

Timid is fine. Socially awkward is a possibility depending on how you play it. Will likely be rather observant so it would not be you missing things vs it being more like being introverted. You are not that much below average to be really notable.

A lot will depend on your starting skill choices. Things like lots of sense motive would clash with saying the wrong thing very often. Whereas if you max out Spot and Search plus physical skill she could be very aware and just not interested in people very much.