[Hector isn't sure Isaac is ready to hear Hector's thoughts on their alliance. It's likely to spook him, and spoil the relative ease of this moment.

He releases Isaac's foot when he starts to shift, and dips the cloth back into the water to rinse and re-lather while he waits for Isaac to either settle or bristle against his help and demand to finish the job himself.]

Yes, we shouldn't be caught unawares...but I think we have time. Immortals have nothing if not time, and after his last attempt failed, he won't act in haste.