When Arthur left for work, Molly took the letters from Percy and the twins and read it. She screamed in pure fury, because everything, what Albus and she were working was destroyed again. Why couldn’t the twins just follow the plan, but no, they had to sort themselves into Slytherin. After she told Ron and Ginny about the twins’ sorting, both were enraged, how they were betraying everything the light stood for and the worst thing was that their dad was going to support them and mom had barely any control of their older brothers. This meant that their lives would be a living hell.