Final Chrono Quest after Moonshade Desert for gold belt Help please.

Darksylph - Heavens Tear
Darksylph - Heavens Tear Posts: 1,816 Arc User
edited December 2009 in Dungeons & Tactics
Ok I finished the full rebirth Delta run, went to Moonshade desert, did a few requred quests & was told to click "protect the princess" at the Usher. I did that and got sent to a room in TT where i was told it would be an easy boss & in that room i should select "Kill the princess" to get the boss. Well that was the wrong choice.

I now have to do ANOTHER rebirth delta run, where i have to use the Moonshade Copper Mirror "around a brilliant light" in rebirth delta to fight her. 3 questions;

1) Where in rebirth is the "brilliant light"?
2) When is the most opportune time to fight it?
3) How tough is it?

Thank you. I hope to get a quick answer. ^^