At first we thought she was just out to get Sayid, but it would appear that she is involved much deeper in the story.

She came to the island under the pretense that she was capturing Sayid.  Interesting that Sayid did not want to go back to the island yet he finds himself captured and heading there.

We later learn that she is involved with Jacob when he visits her in the hospital.  Perhaps he was asking her to pick up Sayid.  Further, she presents Locke’s dead body to Richard proving that dead is dead even on the island.  It is not clear what her purpose is yet.  Only that she seems to be on the side of Richard and Jacob.  One of her fellow travellers mentioned that they were the good guys.

If there is anything that Lost has taught us is that the idea of good is a blurry line depending on who you are with that day.  It looks like we’ll have to wait till next season to learn more about this character.