User blog comment:Derax-Pagani/Chapter 502 Review/@comment-130.105.140.154-20160919141608/@comment-2125188-20160920171617

I don't think he brought her back for plot-related reasons. If you read Mashima's interview about ft zero, you can tell he brought her back cause he just wanted to do more with the character (and perhaps just tie her into the main story). Besides, who said she needed to have a massive impact or play a pivotal role in the arc. Can't Mashima bring her back just simply because he feels like it?