User blog comment:IamJakuhoRaikoben/Chapter 475: Dimaria Chronos Yesta, Review./@comment-27281341-20160301082655/@comment-7418318-20160301090816

She didn't. Dimaria froze Carla and everyone else.

Ultear enabled Wendy, Chelia and Carla from being frozen by actively insulating them from Dimaria's magic, but then withdrew that protection from Carla resulting in her being frozen in time again.