I wasn't surprised to see that she's "working for Ben" on this whole thing - and it's typical of him (apparently) to concoct some elaborate plan like that - but I think that in the end she's either faking it because she's "afraid" of Ben (I mean, they did portray in flashbacks that she'd asked to leave the island and he said no, more than once, so that's like being kidnapped if you ask me....and maybe she's got Stockholm syndrome, you know?) OR she really is going along with something, but will fall for Jack or some other crap like that and will end up helping them.
I dunno, hard to tell with this show, lol.
Some of it was a little boring, but I always get bored with the flashback sequences. I think they take too long and it detracts from the current situation. That said, I was glad to have that background, especially the stuff that happened once she came to the island. And that one dude she had hooked up with, I remember him, but I don't remember whatever happened to him. Did one of "our" guys kill him? If so, who? And when/how did that happen? So much water under the bridge with this show that I really do forget a lot of little things....