Even though he'd shut the door, there was yelling so it wasn't like she could help but hear. Well she knew there was yelling, she didn't really know what was being said of course. The only thing she could make out was 'I know' and that was about it.
When he came to find her, she was just about to hang up from the chinese , "And two orders of egg rolls.. mmhmm. All right, thank you.." she hung and looked up at him.