You may obtain a new Moonshade Earring by tossing your current one and checking the ??? next to the Veridical Conflux in Grauberg (Glowing ??? near Single Tree). This reset your current WotG mission to Maiden of the Dusk. You must redo the fight and obtain the Moonshade Earring along with all cutscenes.
So it was that Altana's grief was ended, tears marring Her divine countenance no more. Yet the Crystal War rages on. Ever must you carry on the fight, in honor of she who sacrificed all, that others might know peace...
SPOILER WARNING: Click here for additional details about this story line.