User blog comment:FairyRaven/Fairy Tail Chapter 406: The Girl Within the Crystal, Review and Commentary/@comment-24499036-20141027114237/@comment-7418318-20141027121111

I already theorized that Mavis was frozen right before her death and that waking her up will finally kill her for good. And the title as MS translated it "In order to destroy my body" makes it a lot more likely.