[Kealym]

Mmm, well, it is a bit odd. I'd say it's just Bern controlling her piece very directly, similarly to how Lambda appears to be very literally acting out the MF19YAO dialogue during the phone calls.

And to be fair, Erika herself delivered the purely Meta "Detective's authority. ......The detective has the right to inspect all crime scenes. Stand back, Ushiromiya Battler. This is an official right of this game, which the human side has acknowledged.", right before the screenshot you posted.

Also, while I myself would say Piece-Erika and Meta-Erika are just about the same entity, all the time, Erika starts participating in the Meta layer (or at least, a layer above the Gameboard) in the scene of Kinzo's escape from his study. She talks to Kinzo, Beato, and introduces Dlanor. I forget if she was above the Gameboard earlier than that.