Maybe it was the lasting effects of the potion, but something about Malfoy’s hands moving across her felt so terribly and wholly right.  It must be the potion  . There was no other reasonable explanation for why she felt her whole body relax under his caring movements - no reason why she wished he would slide his hand closer to hers and interlock their fingers. And maybe it was just the potion that had made her notice and appreciate the way he was so willing to attack his friend just to protect her. There was no other  real explanation. It had to be the potion.