I think the actress that plays Libby got a speeding ticket or something and that loads of people were saying that that was the reason why she was killed off, but the producers said that they were done with her.
She's definitely dead, but she might come back in flashbacks.
And the producers also said that they were done with Ana-Lucia; her story's done.
Plus she got arrested.
GOSH.
I sound like a gossip columnist.
I'm sorry.
I believe Michelle Rodriguez (Ana-Lucia) also received a speeding ticket or something of the sort, and it was one too many.
She didn't want to do community service, so she finished her episode and went to jail.
I'm pretty sure she's not coming back on Lost again.