....I'm really not a fan of how Miss Buff Lady is treating the MC.
She looks like and acts like some crazy muscular dudes on the internet who advocate that women should listen to men, don't have any rights, be submissive, beaten or whatever horrible things they say or show to humiliates them.
Maybe it wasn't intentional from the author but she just give me the creep.
Putting that aside, the MC have zero chance to go against her, like physically speaking. She can't push her and force a way out. Okay, she is into that, being forced and dominated by someone, but what if she wasn't? What if the only thing she wanted was to get out of there? She never give her the chance to choose. She never give her consent for that. Even in a master slave relationship you give your consent for that because it's a play.
Maybe they will say it in later chapters but seeing a video or picture of someone getting off or having a good time isn't a go to sexually harass or agress them.
This feel more like a agression than a fun time with two consenting adults.