User blog comment:FairyRaven/Fairy Tail Chapter 428: When We Take Different Paths, Review and Commentary/@comment-7418318-20150419081221/@comment-7418318-20150419091952

I wouldn't be surprised if in one of the next chapters Mary would indeed try to incapacitate Virgo with pain and Virgo would thank her for the treat before pummeling her.^^

But for that Virgo would have to get free from the magic-sealing chain first. Come to think of it, I wonder what this chain actually does to a Spirit.

I would have expected such a magic-sealing item to interrupt the connection between a Spirit and this world and thus send it back, but that obviously didn't happen.