"MmmHmm." Heidi nodded and kissed Tracey, tugging on her lip with her teeth. "Your noises give you away. Especially all those loud ones you made when I took you on the desk."
Heidi too, felt the instant spark between the two of them, something that rose from the pit of her stomach. She kept her gaze locked on Tracey, even as the Slytherin's mouth descended onto her folds.
"Oh...fuck Tracey..." Her mouth hung slightly open as she watched the girl work, feeling herself growing wetter.
The second Tracey's lips met her clit, Heidi buried her hand in the girl's blonde mane. "You're...very talented..." How she got those words through her pants was a mystery.