Ah! I never thought of that. Oh wait, Jack asked her how long she'd been there and she was all 3 years, 4 months, 2 days (or whatever). that would make me think she was talking about being away from normal civilization. She hadn't been on the little island that long because she was at a book club meeting on the big island when the plane crashed. And the fact that she has her time counted down to the day makes me think she wants to go back to normal civilization, not the big island.