can't use her power through minions

Kamijou started by using the composite map created from the gathered maps to locate the closest luggage entry gate. The bobbed hair girl had no obligation to stay with him now that he had a safe means of moving around, but she stayed with him for some reason.

A rectangular station surrounded by thick walls was located next to the giant gate. The inspection personnel likely worked inside.

“By the way, can you control them?”

“This girl’s brain cannot use my powers.”

She could not use her brainwashing.

-New Testament Toaru Majutsu no Index Volume 7 Chapter 1 Part 7