I honestly think Cassidy is conning Sawyer. I don't know why he'd fall for it, because that's what I thought from minute one. I'm thinking that she's pissed because he taught her how to con, then conned her and ran off. Now she wants her money back, and knows that Sawyer will at least think he might be the kid's father. It goes back to the whole speech Benry gave him about making him doubt and conning him. Or at least that's what I think.

And really, The Others are sick, sadistic fucks.

I agree, for so many reasons. I thought what they did to the bunny was fucked up, even though they didn't really do it. I mean, come the hell on. That's pretty twisted. Leaving Jack there with the woman's body, even more so. Though I agree with you, there didn't seem to be much point. He didn't really know the woman, and he was there to try to save her for all of two seconds, so how could he really care that deeply?