She loves the aggressive nature of it, and responds in kind, biting his lip, amid the kiss, hands squeezing into his back and his ass, with about the same force. She almost seems to be treating it as less of a sexual encounter, and more as a struggle for dominance; even with his teeth at her throat, eliciting a long moan from her as he impales her, she tries to twist and roll him over, moving her hands to his shoulders, to try and pin him down.