Flashbacks occur before something in the plot happened, dialogue is the talk between 2 characters, and foreshadowing has nothing to do with an interruption in the plot.
I think that she doesnt think its fair bc they all know what happens if someone wins the lottery.They die.I do think its fair tht her family got picked bc every yr a new family gets selectd to win the lottery so the town can "keep population levels low".SO there is a chance they all gon die....