Occasionally it's nice to wake up and give your sister a bit of a wash.
The slaves have been doing mad things, such as going outside to climb up a ladder and pour hot water on the frozen condensate pipe again. Well, they needed to do this because the heating wasn't working again. And cats need heating in weather like this.
Fortunately, long legs and opposable thumbs are necessary for doing stuff like that so... zzzzzzz.