I missed her original message. :(

Try each one in turn? Library, Pete, Maleria and Wizard..it's going to be one of those four.

YES! You've managed to find all the pieces to my bracelet! To thank you for this, I am giving you one of my very special items!

Earth Mage Amulet

Was at the library. :)

If you want to see which one, go back to Shinwa and she will say you who it is.