Tears leaked from her eyes, as the lesson continued unabated, the vibrations on her potion soaked clit felt amazing, as she rode the waves of pleasure until she reached her apex. She orgasmed hard, panting into her gag. She waited for a split second for the electric shock until she realised that although the sphere had fallen precariously to the level of pussy clamps she had managed to retain the item by mere micro millimetres. She hated herself for feeling proud at her accomplishment but traitorously she felt relief until she heard Winky tisk tisk below her. "Not good enough, I will not add the final electric wire to your gag, but I need to see improvement here". The conciliatory edict was punctuated by a particularly sharp series of jolts through the nipple needles, to disabuse her prisoner that she was going to be given any leeway.