...fine, then. If he wishes to be obstinate, he may do as he wishes. It is of no concern of theirs - any longer. Whatever he might have closed that sentence with, whatever He is meant to have done, it matters very little. Not if he did not see fit to complete it.

"Fine," the child hisses. They do not roll their eyes at that, but it's a very near thing. "Do as you will, then. The pair of them - they are your responsibility."

Not theirs. Not any longer.