User blog comment:Water Dragon Slayer/DREAM BATTLE CHRONICLES: SIXTH MATCH!/@comment-5268982-20130821173514/@comment-7418318-20130821195857

She specifically says she controlls Mira's magic. And Mira had to use her forbidden take-over because her main one Satan Soul was no longer under controll.

Mira also said "You used my magic in front of me" not "a copy of my magic".