Why didn't Kreacher just apparated with Regulus out of the cave? I am re-reading DH and I just came to the conclussion that Regulus didn't have to die in the cave. Dobby was able to take Luna and Ollivander with him out of Malfoy Manor so it is safe to assume that Kreacher could have done the same. Regulus knew Kreacher apparated out of there once before. Why didn't he just order Kreacher to take them both out of the cave?