You had just approached upon a house deeper in the cave you just fell into, you knock on the door...

Distant soft but heavy footsteps can be heard approaching the other side of the door.

...The door opens a with a light force, standing in front of you, a tall chubby anthropomorphic white-furred Nubian Goat, she looks down at you, her tone soft and motherly.

Toriel: "Greetings, are you lost? What exactly has brought your attention here?"

She looks a bit concerned but smiles warmly.