[She's grinning, really grinning, having to lean against the wall to contain herself. They're laughing too. Sure, the cupcakes didn't get eaten, but she considers this a mission success.]

If you insist. Hopefully that thing doesn't drop when someone's walking under it. Then they'll be the next victim of the Cupcakening.

[Maybe this is why Toriel thought Shepard might be a bad influence on Chara. But hey. Just cupcakes. Ridiculous fun that's not going to permanently harm anyone. You get your kicks where you can. But she does follow Chara inside, careful not to get too close in their space while passing the doorframe.]