User blog comment:ThatDisneyGeek/Tartarus Arc Changes/@comment-26287497-20150601013107/@comment-26460727-20150604084741

I think Mirajane helped Minerva revert back into a human. Remember, Mirajane can takeover demons right? When she was younger, she exorcised a demon in their hometown (not sure), the demon disappeared and the demon became a part of Mira. I think Mirajane took over the demon part of Minerva that's why Minerva is once again a human. And if that's what really happens, then I hope we got to see Mirajane in Satan Soul: Neo Minerva form :)