Draco remembered all too well what it had been like living in the Manor with no one to turn to for help or protection. He thought perhaps he should be angry at Pansy; at the end, when Voldemort and some of the other Death Eaters had begun using Draco as a little torture toy – don’t think about that – she and everyone else had melted away. Like they had never been friends. Shunned him, avoided even looking at him if they had to be near him. But he couldn't find it in him to be angry; he would have done the same thing back then. No one risked Voldemort's wrath, and it wouldn't have saved him anyway. But someone could have saved Pansy from Greyback.