About Gibbs and Abby
About Abby Sciuto (Portrayed by: Pauley Perrette)
Abby is from New Orleans, Louisiana where she graduated with full honors from LSU with a triple major in sociology, criminology and psychology. She earned her master's degree from Georgia State University in criminology and forensic science.
Abby is extremely well-versed in her field of study, rarely stumped by the evidentiary puzzles which Gibbs' team present to her; she has been shown to exhibit an almost religious zeal for the field of forensics. Also, she does all the work on the evidence herself.
She hates being called Abigail, but will tolerate it from Ducky in certain situations.
Abby is 25+ years old. In "Model Behaviour" (Season 3, Episode 11), Abby comments that she has been thinking about horrible ways to die "on and off for the last 25 years."
Abby is fluent in sign language because her parents are deaf; Gibbs mentioned it to DiNozzo in Episode 1.03: Seadog. She calls her mother, Gloria, by her first name. She has an uncle named Larry who owned a bar, another uncle Horace who was a haggler, a grandmother who was an Olympic swimmer and a younger brother. She is friends with a group of bowling nuns who love to go on spiritual retreats.
Simple descriptions of the 2, taken from Wikipedia until I can write something more.