User blog comment:FairyRaven/Fairy Tail Chapter 300: Where the Dragon's Soul Rests, Review and Commentary/@comment-112.205.106.43-20120924151229/@comment-5268982-20120925095822

I think that it could be Layla, and Jellal could be confused because she is the spitting image of Lucy (if she has found a way to preserve her appearance after her "death"). Still, I think Lucy is a more possible candidate...we shall see!