This person is bound by a spell—was the first thought that came to his mind once Marcus looked at the raven-haired girl in front of him.
A binding spell can put you into a trance to fulfil the role bestowed upon you in exchange for something. And considering the lady's movements and the way she was reacting to the things happening around her, Marcus knew that he was against a puppet.
But how did those cultists find such an exceptional mage, and how did they put her under the vow? Well, that can wait.
"I will warn you once, lady; back off and surrender. You don't know what kind of people you are working for." Marcus tried reasoning with her, however, he knew it was futile. The effect of the spell remains strong enough to completely dominate the conscience of a person.
She raised her hand and, with a flick of her wrist, sent a wave of scorching flames barreling toward Marcus.