I think Eileen and Erza are twins （￣へ￣）

I thought it was her mother but yeah maybe her twin sister ╮(￣▽￣)╭

Or maybe her "clone"?（￣へ￣）

or maybe its her other split personality which evolve and become a human (╯°Д °)╯╧╧

With every comment this gets even weirder xD