Originally Posted by
Bored at 3:00AM
Because confusion about who she is and where she's from has been a recurring theme for her for the majority of her publishing history, it makes more sense to steer into that than to pretend it doesn't exist.
Geoff Johns did the same thing with Hawkman & Hawkgirl when he reconciled their various origins by baking in their multiple memories and identities to their whole shtick. Of course, then the New 52 muddied the waters by rebooting again, but the foundation was there, and it appears that those versions of the characters have returned in Metal.
Even prior to Crisis, one of Donna Troy's keystone stories was "Who is Donna Troy". Her quest for identity and longing to understand who she is and where she came from is similarly baked into her character. The reveal that her past was an illusion created for her by Hippolyta, Diana, and the Amazons feels like an interesting way of doing that.