User blog comment:Hermione Chase/"The Blood of Olympus" Expectations/@comment-3146930-20140603201454

So I can't remember if this actually happened or if I only think it happened, but I think I remember reading the first chapter of The Blood of Olympus and people speculated that the person that said they would come back for Jason was his mother. Jason and Thalia's mother is pretty much the only person the two fear, or at least Thalia is obviously terrified of her from the time her, Nico, and Percy went to the Underworld. Thalia also mentioned that she had already died, so is it possible that before the Doors of Death were closed, Gaea used them to bring back their mother as a sort of backup plan in the event she needed to stop Jason from doing something.