That little bit of stimulation sends an arc of electricity sparking through her skin, but she doesn't want it to be over yet, no not yet, please.

She bites her lip hard, trying to balance that bright pleasure with a bit of pain, but it doesn't work. He feels too good, he's moving in her and she feels what little control she has start to slip through her fingers. Hard, sharp, deep. Pounding into him, fighting that pressure, determined to hold out to the last possible second.