When breakfast had finished and Kat saw no sign of Lily… nothing happened. It wasn't unusual or strange in the slightest. Lily wasn't known for waking up early like Vivian's household and even then, getting up, showering, and walking around to Vivian's house was simply too much effort in Lily's mind for a better breakfast. Callisto was a great cook, but didn't really have the chance to flex overly much for breakfast so if there was a meal to take elsewhere that was the one.
However, when Kat was nibbling on a sandwich slice that had been shoved into her hands to stop her from wringing them, Kat might have been willing to admit she was starting to worry. Maybe. It wasn't as though she hadn't gone longer without seeing Lily, heck just recently while on she was summoned to other worlds it was sometimes over a week away. The difference was that it was always Kat that was more at risk.