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

She has to be either her sister or maybe her cousin, way too young be her mother (and you forgot to mention the 7 year time skip as well).

I hope she shown to be a lot stronger than Erza, (she should be as is part of the group that defeated Sabertooth & Pegasus) that Gajeel group don't have a chance against.

Also I hope she knows about Erza is with Fairy Tail, that way she doesn't turn on her empire.