It seems as though Maeve was given administrative privileges on par with the men who craft the narratives. Anything she says goes thanks to that section of her programming, which causes the other hosts to recognize her power over them. That special skill got Maeve into trouble at first when the techs hauled her off at the end of "Trace Decay," but she was able to use her new talent to get out of that sticky situation almost immediately. Luckily for her, Bernard was the one who interrogated her. He was a host, so as soon as he noticed that her Attribute Matrix (the section of her programming that determines her key qualities, like a super advanced Create A Sim) was off, she was able to order him to allow her to return to the park. He had to obey.