Marta laughs at his term of endearment, at hearing it aloud in her ears, becoming a startled and high noise as her body clenches around his finger and her brain catches up to the knife's edge she's approached in doing so. In the following moment of panic-fueled clarity she bites down on her lip in that same place Ransom worried at earlier, sharply enough to bring blood to the surface of her skin.

It works, in terms of startling her nerves away from chasing the high of his touch to the quickest culmination possible. For how long that will remain true is anyone's guess.

"That's not really an answer to my question." She can't stop her hips from rocking against him, nor is she trying right now. What she is doing, now that her cunt is too occupied by his finger to continue teasing his cock, is wrapping her hand around the base as she lifts her hips a little bit to give herself a bit of room to work with.