User blog comment:SageSlayer/Why does Erza treat Natsu differently than others?/@comment-31463848-20170309221309

Lucy said herself, Erza may be stronger but its Natsu's words and actions that give the guild hope, this just may be the same case for Erza. during the battle with Hades, it was Natsu who was the one who motivated them to get back up, even without any magic left, while Erza and the rest were shaking in fear. It just proves the point that Natsu creates hope for Fairy Tail, Also she proberly blushed because she was in close contact with Gray during the year time-skip and had no knowledge of Natsu, and was just happy that he was his usual, even more powerful self