User blog comment:Miskos3/Fairy Tail Chapter 367: Jellal vs. Oracion Seis, Review/@comment-4449950-20140118064540/@comment-7418318-20140118144005

Being cheated (like in the GMG), being ambushed (Shadow Gear) or fighting together against Acnologia were quite different from being forced to fight their own friends.

But considering how they treated their prisoners and what they said to them, I could see Sayla thinking like you described, especially with the casual way in which Silver took out Natsu or how easily Salya herself could take care of Elfman and Lisanna. Furthermore they probably assume that Tempesta's self destruction killed whoever was responsible for defeating him.