No capítulo dez de Relíquias da Morte nos é apresentada a história da fuga de Kreacher da caverna de Voldemort:
“How did you get away?” Harry asked, and he was not surprised to hear himself whispering.
Kreacher raised his ugly head and looked Harry with his great, bloodshot eyes.
“Master Regulus told Kreacher to come back,” he said.
“I know – but how did you escape the Inferi?”
Kreacher did not seem to understand.
“Master Regulus told Kreacher to come back,” he repeated.
“I know, but – ”
“Well, it’s obvious, isn’t it, Harry?” said Ron. “He Disapparated!”
“But... you couldn’t Apparate in and out of that cave,” said Harry, “otherwise Dumbledore – ”
“Elf magic isn’t like wizard’s magic, is it?” said Ron, “I mean, they can Apparate and Disapparate in and out of Hogwarts when we can’t.”
There was a silence as Harry digested this. How could Voldemort have made such a mistake? But even as he thought this, Hermione spoke, and her voice was icy.
“Of course, Voldemort would have considered the ways of house-elves far beneath his notice... It would never have occurred to him that they might have magic that he didn’t.”
“The house-elf’s highest law is his Master’s bidding,” intoned Kreacher. “Kreacher was told to come home, so Kreacher came home... ”
Essa passagem parece estar martelando em casa, ao ponto que Monstro conseguiu escapar porque Regulus ordenou que ele voltasse para casa. Mas o Monstro não seria capaz de escapar de qualquer maneira? A ordem de Regulus não criou sua capacidade de aparatar. Então, quando Kreacher percebeu que estava sendo arrastado para baixo da água por Inferi, ele poderia simplesmente ter decidido desaparecer por conta própria para salvar sua vida. Então, por que é relevante que ele estivesse seguindo as ordens de seu mestre?
Entendo que era esse o caso real, mas a passagem parece implicar que ele estava apenas capaz de escapar porque ele estava seguindo ordens. Mas por que deveria ser isso?