"You don't have to thank me for something like this!" She would have added that he didn't ever have to thank her, since she enjoyed doing things for him, but she doubted he'd abide by that.

"Just let me know if the water's too cold, okay?" With that, Naomi retrieved her sponge from the water and got to work. She was deliberately careful, scrubbing the accumulated dirt away with gentle strokes and making sure that no square inch on the Volt was left unattended to.