Though he was bone-deep exhausted, Harry took the time to call for Kreacher once he had reached the common room. The elf approached reluctantly, having had to deal with Voldemort the last time Harry had summoned him. When Harry presented him the locked, he froze. Hopeful, he looked at Harry but did not dare to reach. Knowing how kindness felt after a lifetime of abuse, the teenager sank to his knees. "If you want it, it's yours. Slytherin's locket belongs to Tom, but your master had this made specifically. So, it belonged to Regulus. I am sure that he would be happy for you to have it as a memento."