User blog comment:B214/Chapter 501: Mari and Randi/@comment-24546844-20160912135626/@comment-7418318-20160912141245

Erza wouldn't be of much use against Dimaria either. She'd be stopped cold by the time stop just like everyone else and I don't see how Erza is supposed to neutralize that power or be immune to it.

And I don't want her to either. It's already bad enough that Erza could just "glare away" the Historias and is connected with Irene, but to make her the Deus Ex Machina against Dimaria would overdraw the bow.