Plenty have said worse and probably meant it less, if they're being honest. But there's something about reducing a queen to this state that is its own reward, not that Teren is one to gloat (apart from smirking like a piece of shit, at least), and after it looks like Lakshmi is about to hyperventilate she finally decides to end the poor woman's suffering.
In total contrast to all the teasing, Teren's final motion is an authoritative thrust of several fingers, pressing directly onto that sweet spot as she holds Lakshmi's legs apart with her free hand and her pointy elbow.