Natsu's "away team" has successfully rescued Lucy and Yukino, but now they're puzzling over the mystery of the two Lucys! And back in Crocus, Erza's battle against Kagura truly begins, a battle steeped in vengeance more than sport!
Right. It'll let them know 
Lucy was successfully rescued.
أجل. سأبلغهم أننا نجحنا في إنقاذ لوسي