Who is Jessica Lucas?

The Hollywood Reporter mentions actress Jessica Lucas as starring in JJ Abrams' upcoming 1-18-08/Cloverfield movie. But who is she, and what character does she play? My guess would be Lily, girlfriend of Jason Hawkins. Jessica has been in "The Covenant," "She's the Man" and the ABC series "Life as We Know It." She also will play Veronica Lake, aka Ronnie, on the CBS hit, "CSI."