She knows.

She knows his mother died. Everyone knows. But she knows his father killed her. She knows his father is a deatheater. She knows he will be expected to be too. She knows his father is abusive. She knows.

She knows the horrible things done to him. She knows he didn't fall down the stairs. She knows he didn't get knocked of his broom. She knows he didn't cast a spell wrong.

She knows his coping mechanisms.

She knows everything.

That's why. He opens her door with his left hand. Closes it behind him too. Only makes eye contact as he sinks down to the floor, leaning against the wall. Blood trickling down his sleeve and onto her floor.

She knows.