The odd thing wasn't that Jon was pissy and she wasn't, but that she felt perfectly okay about it...as if it was normal. Clearly, Jon either wasn't aware he was acting odd, or he hadn't been awake long enough to notice.
"Well, if you don't want to get up, you can have Mom wake you up," Zoe said. "And I'm taking the first shower."
"Fuck her too," he muttered. "I don't care if you go first..."
Zoe shrugged and headed to the shower. She went in and soaped up, getting cleaned off.
Meanwhile, Jon stirred on his own. He was still irritable. He had to find the stone before someone else got it, like his stupid sister. He snuck into the other bedroom to find it.