Rhode is quiet, but very carefully dips into his mind, silent and unobtrusive, in order to make sure that his mind is clear... so that when Tyki sleeps, he doesn't see whatever the other Rhode shows him. He wants to rest, so he will rest.

Once she's done with that, Rhode remains unusually still, eyes trained on the door, gently smoothing down Tyki's hair while he sleeps to let him know that she's here.

She will not sleep.