Perhaps, that is the reason why she is chosen. Some sort of moral test? Since it seems like we are on our own when it comes to morality. Echo and Aurora stay out of our business when it comes to what we, personally, view as right and wrong.

[ Something he's still thinking about, honestly. Perhaps, it is going down the wrong rabbit hole, but he does find the concept fascinating.

But is surprised to hear that she won't let anything happen to him. ]

... that so? Well, thank you... I appreciate it.