I think instead of showing "oh woah yeah she's awake" it was showing her disdain or disgust but I don't think at the action but at the person having sex with miyako. So in my opinion she might be in the club to make miyako end the club. Either by shaming her till she feels sick to her stomach or by shaming her to be with only one person "Her". (Aka me just running on a theory cause I'm mad