That river in Egypt

"Look at the mirror, silly. There's the faintest bit of condensation on it. If you had more hot water than you were allowed, it would be much more foggy"
A logical answer made him feel relieved for some reason, probably because it meant that she wasn't watching him. She wasn't sure why it mattered, because even if she was watching, he was her pet after-all. He shouldn't have been worried unless he planned on doing something wrong...