Talk:Chrono Story/@comment-197.162.64.23-20140422102430/@comment-6192846-20140422121107

Lack of elaboration, difference in personalities/methods/motivations, clear intent by author to keep it a mystery, hints also alluding to being Irina instead, etc.

It's safer to assume she's her own character than she's any previous character until a firmer confirmation is given. You can find numerous theories for why Ma is Elluka, Irina, a combination of both, Eve, Kayo, and the list goes on.