Check over by the graveyard; that's where she was seen last. The person you speak to in order to advance those sidequests will have three periods above their heads. I can tell you the exact location and person to talk to in pm if you really need it, but it was kinda obvious who to talk to just walking over there in that direction...GLaDOS said:I didn't know where to find Kukiel.Lord Ghirahim said:Crystallized feelings of gratitude. It's a sidequest that unlocks right before Lanayru Desert; speak to Kukiel's mom to activate the series of NPC conversations, then follow the quest until you unlock the gratitude crystal quest.