The charm does protect her from his cold touch. Plus there is the added bonus that he is an attractive man, who keeps flattering her. She has not felt this way since the Yule Ball. It is a nice reminder of how pleasant life can be.

"Not at all. Sometimes it is best to truly know your own magic." Hermione smiles. She moves smoothly on the dance floor (they were all taught how to dance at Hogwarts).