"Well, first of all, wizards don't use DNA testing," Khaat said. "That's a muggle thing. Second, it would be very unlikely that you would be identical to her and not be related. My understanding of genetics is that things just dont' work that way.
"Why don't you just go ask Emmy Lestrange yourself? Even if Sophia is missing, why wouldn't you want to go ask your mother? Emmy is a very capable healer, and she can give you the information you don't have. If you lived with your biological father, surely your biological mother would know who that is and that you've been there. I see no reason why it needs to cost you a lot of money. Maybe if you were in the muggle world, but things just don't work that way here."
"St Mungos does have a good healer's training program," Brian said. "Khaat and her father run it. If you want to be a healer, you should apply. You'll find that you learn fast there. Certain things just run in magical families, and healing seems to run in the Lupin family as well as in the Lestrange family. And if Sophia is missing yet again, we need to talk to Matt. It seems to me, too, that you need to start with Emmy and Matt Lestrange."