The struggling is all for show, really. She wants it, she asked for it by name. But when she gets what she wants, she simply can’t hold still.
She’s been told before that these things are wrong, perverse. To accept them in practice would be to accept them in principle. And she couldn’t do that. She’s a woman of principles.
And so she squirms. And she gasps. And she begs please don’t. Usually, she’s given it anyway. But, sometimes, the action stops. And she has to beg for it. Admit it. Claim it.
She has to give it a name again. And by naming it, she makes it hers.