Elves in this part of the world are a pretty reclusive bunch, sticking to their home in the Nomatassei. Only diplomats and the like are commonly seen outside the forest, and even then "common" is probably the wrong word. They also don't tolerate half-breeds well--she would not, likely, have grown up with Elves. Also, her father is most likely to be the Elven side of the family--you may determine whether it was a... well, consensual situation or not.
I'll give her Elven as an automatic language. She doesn't get the Negotiator feat for free (you'll note half-elves in 3.5 get a +2 to Diplomacy and Gather Info); instead, pick any extra feat you wish (you may, of course, *take* Negotiator), and take the human skill point bonus. Both the bonus feat and skills come from growing up mostly around humans.