Oh dear. She has a perfect moment of clarity, in which she realizes, without a doubt, that he has her number. She's already been seduced, all he need do is confirm his desire to actually have her. No wonder Arthur went with grumpy in response to Eames' charms, or he'd always be half out of his clothes before he realized what was happening.

"If you like." She has no coyness, no worldliness to combat the instant effect his tone and touch have on her. So she sounds breathy as she answers.