Question about CSI: NY's Stella?

Stella is a half-Greek, half-Italian orphan (though she identifies more with her Greek side) who grew up at St. Basil's Orphanage. She left when she was eighteen (episode 115, "Til Death Do We Part"). Her parents remain unknown at this time. Mac teases her about just "knowing all that stuff," but most of what she knows about her Greek heritage she learned from a book. She can speak some Greek and Italian, but the level of her fluency is unknown.