Saval is a character I developed for a Table Top LUG (Last Unicorn Games) RPG and her biology and personality is well developed
When I played her in a LUG campaign she shocked her Academy Rookies by making a Lewd Comment about another Cadets firm little but, they expected the usual Vulcan coolness but got the tropical girl who's people rarely wear clothes
It's why she gets along with Onions, Deltas an Beta zed
As an Empathy lying to her is a waste of time unless your brain type is so dissimilar as to be unreadable

She can if needed serve also a ship's councilor having been cross trained in the rudiments of Psychology though she's not known for pulling her punches