[Of course someone would knock just as she's finally getting in the shower. A small part of her wants to tell him to bugger off, but it is Spock's home and she's a guest. So she rolls her eyes and wraps a towel around herself before heading over to the door and leaning against it to return to him.]

Twice a week for four people is completely necessary to make sure everyone can actually eat dinner at night. No sense in everyone trying to cook for themselves. The kitchen will end up a complete disaster.