They perform some more magic tests and run out of mana and recover mana and perform more tests and a second sleepover could be fun but it's decided that people can do coordinated tests in their own places and there is not actually a need for them to all be in the same place. The Maxwells' driver takes Jess home (and Maya, too, if she prefers that to staying with the Maxwells but they assure her she's welcome to stay there), then takes Sadde, Theo, and Tyler to the Farron residence, where Sadde prefers to be dropped—he'll go to his place by public transportation, he'd like to talk to the—twins?—yes, thank you, it was a pleasure meeting you.
"… Do people not count as magical for these purposes, then? – I should be asking Cerberus this."
"Because he seemed to object some to being called Kero. And I don't know him all that well."
"You know him fairly well. He doesn't know you because you're two days old."
"Seems weird to treat it as though we're familiar enough I can use nicknames he maybe doesn't like."
"I don't have strong opinions about right now. Long-term I think it's similar to yours – try to collect the cards to avert catastrophe, use them and sorcery to hopefully benefit society."
The bear floats back towards them from—somewhere. He looks like he's been eating. "Hmpf?"
"– Tyler had a few questions and I hope you didn't eat anything you weren't supposed to."
"Probably nothing in particular, but if you cleared out the fridge Dad'll want to know."
"Anyway – questions included: could the Lock be used to keep the cards safe in a bag?"
"No, the Lock needs to be physically located in a lock or something like that to work."