It wasn't Ginny that answered but Tracey. "You do," she told Heidi, suddenly feeling bold and adventurous. Remembering, for some reason, the time she'd shagged Heidi in the Prefect's Bathroom, Tracey decided that it was a perfect time to do it again.
Ginny laughed but was already pulled at the harness that held the strap on in place. Taking it off, she got to her knees and moved around to start helping Tracey into the harness. Of course, Ginny's fingers were naughty as she did; lightly stroking Tracey's folds before sliding her finger inside for just a moment.
Once the harness was on, Ginny looked to the two girls. "What am I supposed to do?" she pouted playfully, sure she wasn't going to be left out. Though, if she was, it'd likely be a good show…