Jack tells Eloise that he thinks they can change what happened, Kate isn't happy about it

Erik the other throws Kate on the ground in Eloise's tent and then gets a punch in the face when he tells Erik to take it easy on her. Erik tells them not to talk, but they do anyway. Kate asks Jack what he meant earlier when he said that they needed to put things back the way they were supposed to be. Jack says that if they can do what Daniel said, Oceanic 815 never crashes and all of the people that have died since they got to the island would still be alive. Kate asks "And what about us? We just... go on living our life because we've never met?" Jack says that all of the misery they've experienced would be wiped clean. Kate says "It was not all misery" and Jack replies "Enough of it was." Kate has tears in her eyes at this point.

Eloise walks in and asks what Daniel needed the bomb for. Jack says "I don't think you'd believe me if I did." Eloise tells Jack that when she was 17 years old, she took Daniel to the bomb where he told her if they buried it, things would be okay. She says that Daniel told her he was from the future and then disappeared before her eyes. Before Daniel died, he told her that she was his son. She says that if he explains things to her that she will believe him.

She then pulls out Daniel's journal and asks "How is this my handwriting if I don't remember writing it?" Jack says "Because you haven't written it yet." Jack tells Eloise that he thinks that if they can it all back and Daniel will not be shot. He says that if they do what is in that journal, none of this will have happened. Eloise turns to Kate and asks "Does he know what he's talking about?" Kate says "He thinks he does."

Eloise says that she'll take them to the bomb, but they buried it over 20 years ago and now there's a village over it. The Dharma barracks were built over where Jughead is buried. Eloise says it should be simple since they have been passing themselves off as members, but Jack says that it'll be more complicated than that.

Kate seems to be leaving out here that if Oceanic 815 doesn't crash, she'd be in jail for killing Wayne. I do believe that her emotions about the island experiences are real though. Jack is determined to change things though and is willing to sacrifice knowing Kate to have never experienced the island. Something tells me that things won't work out exactly how Jack wants them to though.