Now I see, but I don't remember her clearly in Lost (what was her role/ part?).
I saw this series few years ago, but I stopped little after the second series because I (and my family in this rare case of TV concurrence) started to find it changing from continuously enthralling and intriguing to more and more boring (sorry dear D Akey for agreeing with You only partially here) because stories and mysteries were piling up more quickly than solving, with many flashbacks, flashforwards, flashasides and flashindream. I had the impression that the actors and the events were becoming somehow more and more "pulled and tired", the characters more and more "manieristic", "picturesque", "statuary", less universal and with just a flavour of real international and cultural variety.