yes

   "Were there any special rituals to go with the ingredients?" He asked her at the same time he spread her legs further laid the palm of his hand against her sex. She quivered beneath his touch. She was hot and moist but not quite ready for him.

"No." She said a little more forcefully than was needed. He parted her lips with his fingers and her smooth pussy glistened.

"No." She almost whispered it and Harry smiled. He slip the tip of one finger of one finger inside her and she gasped.

"Your not telling me every thing Hermonie. You said it yourself, we have to get it all right the first time. If we use something that counteracts against what you used before...." She jerked away and rolled over to face him. Her nipples were stiff and hard seeming to strain out towards him.

     "Damn it Harry! I know what I'm doing! More than you or Ron, I'm far more capable of this sort of magic than you are." With that she rolled off the bed and stalked over to a chair in the far corner. She sat down crossing her legs and buried her head back into the book.