The context of the following conversation is She had almost finished straightening the kitchen, Jan wiped the crumbs away.:
Jan says I'm just now finishing up the kitchen. Wiping all the crumbs off the counter..
The friend responds Did you clean the kitchen alone?.
Jan responds I did. But there wasn't much to do..
The friend responds What did you eat?.
Jan responds Soup and a crusty bread..
The friend responds So that's where the crumbs came from..