He wanted to know who she was, what she had been. He had never seen her at Hogwarts, and she had a local accent, so she must have been homeschooled. A practice typical of Pureblood families, particularly dark ones that aligned themselves with the belief that they were superior because of their untainted blood. Ones that did not want their children to be taught muggle sympathies from the likes of Dumbledore or other school officials.