User blog comment:Ncduru/The Erza-Irene Connection/@comment-6904925-20160425120357/@comment-198.84.178.54-20160428034841

Whoops just realized my first comment did not make sense. I meant that if Eileen was somehow a demon or etherous like Tartorus, then she probably would not age... that could be how she could be Erza's mother or as someone mentioned elsewhere an earlier ancestor.

If I am wrong (and probably am) I wonder what Kyouka was actually referring to for that part.