She wriggled in her seat to add to the show, but the things she thought about Malfoy did not result from the potion. The antidote was doing its job - lust and desire didn't force their way into her - meaning her appreciation of Malfoy was genuine. Hermione started slightly as she realised she was attracted to him. She would need to ensure the potion was entirely out of her system before she analysed how much, but this man in front of her, for whatever reason, was not at all the person she expected Draco Malfoy to be. Whoever this unexpected man was, she liked him. 