The silence between them rang clear like a struck bell. Really, Harry wasn’t worried about going back to live with Petunia and Vernon. Either he and Draco would successfully defeat Voldemort, and it wouldn’t matter, or he would be dead, and it  really wouldn’t matter. No... what really got to Harry, was the knowledge that Sirius was prepared to send him back to live with those awful people. That everything he had said and promised in Grimmauld Place, he had ripped away after less than two days.