That...is not the answer they expected. Frisk ducks their head a little.

"Oh." They hesitate, since, well...they have Toriel and Asgore and everyone, but they've--they weren't family yet, even if they're missing Frisk...and Frisk doesn't miss them nearly as much as they used to.

So it feels...sort of safe to nod, quietly, and respond with "Me neither."