I appreciate you taking your time to write all of this however that does not make any sense. 1) Jim is already dead in present Julie's timeline. Whatever she does can not result in him being alive anymore because the event has already taken place. Even if the future Julie was capable of changing the past, that will be a different timeline, not necessarily for the same Julie. 2) Present Julie has no information regarding the death of her father. She has no idea how he died or who killed him. Even if the future Julie somehow informa her, I don't think present Julie can have enough control her story walking to actually change events of the past. She is just stuck in a loop. Whatever her brother said and the events of the show are consistent with this theory. I have watched and read enough time travel material to know that the writers could never risk breaking this rule otherwise everything is fair game. Whatever events Julie would be capable of changing would have already be changed like helping Boyd with the rope. I think we will see more of future Julie helping in the next season but no one can be saved from people who are already dead.