Draco Malfoy

Harriet Potter, Harry Potter's sister, is married to Draco Malfoy and is the mother of Scorpus and a daughter, Diane Malfoy. The point is that Scorpus and Diane are going to Hogwarts.
Draco is the potions teacher and Harriet is the flying and quidditch teacher; they called her Madam Potter

Harriet and Draco had argued for some reason, since they are both teachers.
Draco was in the dungeons in his office
That's where Harriet comes in: Professor Malfoy, can you...
Draco was still angry with her: If you don't mind, I'm busy. Good night.