Sheesh. How the hell is V'neef so well adjusted compared to the collection of screw-ups and sociopaths that are her siblings?
One is never sure how well adjusted she actually is because while she is younger and has had less time for her feuding with her siblings to affect her she is also known for her charm and socal skills and thus is likely better than the rest at hiding that part of herself. We are also pre-disappearance and so while all the houses jockey for position the civil war clock has not begun ticking.