Heidi just chuckled at Tracey's dismay over her failure to overpower Heidi. She was aware that they both knew that without magic, the only way Tracey would ever win a bout was if Heidi let her. It was fun to let the blonde win sometimes, but not now. Now she wanted to please Tracey.
Looking up from between Tracey's legs to watch the girl squirming in response brought a grin to Heidi's face. From her position, she wondered if Tracey could see the back of her shoulder, which was now marked by a tattoo of a strangely familiar heart design that rather closely resembled another heart, that rested on the end of a silver chain that was once around a certain blond Slytherin's neck, and it was done in yellow and black with a specific quote by a famous Irish poet surrounding it. But the discussion about that could come at another time. Right now, Heidi was focused on making Tracey come.
Sliding her tongue in between Tracey's folds, Heidi made her way to the girl's clit and flicked it gently with her tongue before returning to the girls folds and dipping her tongue inside Tracey's damp sex.