Toriel escorted you kindly into her home, the warm interior is calming along with the decorations.

Toriel: "Frisk! Come, there's someone I'd like you to meet."

The low pitter patter of feet can be heard coming from the opposite room, Frisk emerges from the corner, you're the thing that instantly catches their eye. Frisk is silent while staring at you, as if they can see you by keeping their eyes closed.

Toriel: "I'll go make pie to celebrate! You two get along now!" She exits.