After re-uniting Neville and his toad, Harry invited Hermione to join him and Ron in his compartment for the rest of the ride. She accepted, saying she had a lot of questions about the magical world, and maybe he could answer them. At his look, she told him that she was the first witch in her family, that her parents were dentists, a career that is greatly needed in the United Kingdom. Harry chuckled in agreement, remembering the nasty green color that seemed to permanently reside in Uncle Vernon's teeth.