Lunch hadn't started until late, which means that it goes until late, and so everything else just keeps getting pushed back. It's really late by the time they've cleaned up and got their tupperware containers full of leftovers. Actually, it's gotten so late that Elsa refuses to get in the car with Anna because neither of them can stop yawning.
Her mother looks delighted at the prospect of a sleepover. Anna sends her a sleepy glare but says nothing as they prep the guest room.
...The single guest room with a single bed and no radiator.