User blog comment:B214/Season 3 confirmed!!!!!!/@comment-24502975-20150306152823/@comment-26108673-20150307205018

Nice theory, Anon, but I also think it will be 12 episodes only. If we are talking about volume 5 and 6 that are the biggest ones, I doubt they could include volume 7. Just like Sairaorg vs Issei appearing in the PV but it was confirmed that scene will not be present at the 3rd Season,  I don't think they will include her separate profile, in my opinion.