User blog comment:FairyRaven/Fairy Tail Chapter 325: Unity, Review and Commentary/@comment-49.176.34.54-20130330054337/@comment-6146666-20130331030821

Might be a dumb question but what is the 80+ barrier I might be able to better discuss this if I knew what it was lol.

Yeah we never know. I mean they definitely have the means to teach her dragon slayer magic considering they are royalty.