In time they rested and Jill had Mike treat Patty to a bath given by telekinesis, and herself sat on the edge of the tub and squealed and giggled when the older woman did.  It was just play, very human and not at all Martian; Mike had done it for Jill on the initial occasion almost lazily rather than raise himself up out of the water - an accident, more or less.  Now it had become a custom, one that Jill knew Patty would like.  It tickled Jill to see Patty's face when she found herself being scrubbed all over by gentle. invisible hands... and then, presently dried in a whisk with neither towel nor blast of air.