Because she was the last one to deliver a baby successfully on the island. Perhaps she was singled out really for that reason.

I think you're right benster. There have been a lot of connections made here in the past weeks about just that.....and more.

I think you'd be interested in this thread: "You look just like her" -Harper to Juliet. (http://forum.thefuselage.com/showthread.php?t=109116) There are a lot of time traveling connections to why Juliet ended up on the island. I'll bet you'd have some input!