When the Librarian traveled into Requiem and talked to the Warrior-Servant Endurance-of-Will, she eventually convinces Endurance to allow the her to leave an imprint. This is done by touching gauntlets, and the imprint is made. So at this point we have two Librarians. One of which (the Endurance-of-Will or IsoLibrarian I guess) remains on Requiem. So is this the Librarian that is encountered in the game and near the end of Spartan Ops?

Then, after the Librarian arrives on Erde-Tyrene to prepare the keyship in the plains of Africa, she then confers her title unto Chant-to-Green, who becomes the new lifeshaper. It mentions that they "touch gauntlets" and their "ancillas will confirm the transfer". Is this any different from giving Chant-to-Green an imprint of herself? Is there now a third "copy" of the Librarian? So then what happens to this new lifeshaper? And what happens to the Librarian? I'm assuming she's just hanging out on Earth and is destroyed when the Halo fires?

Sorry for all the questions. I hope someone can help me get things straight... :)