User blog comment:IamJakuhoRaikoben/Chapter 474: In the Moment of Complete Silence, Review./@comment-77.85.242.158-20160223195217/@comment-7418318-20160223200937

I doubt it.

Even if she can stop them in time, we're talking about beings far beyond the merely resilient.

Acnologia took attacks from Igneel that could level entire cities and vaporize mountains and was barely fazed by them. And Zeref is literally immortal.

Unless her attack power is beyond ridiculous, she could probably whack away at them for hours without getting a serious wound onto Acnologia and without being able to finish off Zeref.

Additionally we've seen Zeref use a spell that looked like it froze time when communication with Natsu in the Tartaros arc, so it's quite possible that he could counter her magic if he wanted to. And Acnologia is highly resistant to magic too.