[He barely acknowledges the first part. He knows all of that, he simply doesn't care. Things like death and understanding don't make any difference for him. All that matters for him is that Ciel continues to hold his grudge against his parents' murderer so that he may have his meal.]
[He can tell that she's nervous now, and it amuses him. When he speaks his tone is far from reassuring. It's mocking and you can hear the amusement in his voice.] You have no reason to be afraid. As long as you do nothing to harm my master and he has no reason to hate you I won't do anything.