It was none other than Qi Shuai and Li Xue at the door. Earlier when Qi Shuai offered to take her to some other person who can also be a help in such a situation, she felt her instinct warning her about it. But seeing her time getting wasted, she agreed to follow around.
She was relieved when she confirmed the way she was following was not the one she had followed the last time to reach Mr Beelzebub's office. But she didn't realize that it was just her way that was different, her fated destination was still the same. She deceived herself thinking that everything was going according to her own plans, but when the elevator dinged open at the floor, she realized that all along she had not been given any chance to play.