User blog comment:B214/Chapter 482 review/@comment-27389164-20160418123540/@comment-7418318-20160418123755

Oh please no... not another "your lost parent is an enemy"... we've had plenty of that already.

Not to mention that Erza's mother (assuming she wasn't killed in the raid) lost her daughter to a Zeref cult, so her choosing to follow Zeref wouldn't make a whole lot of sense.