The monster pins Frisk to the ground and buries them in the dust. They're unconscious before they suffocate, and long before the monster picks up Frisk in its mouth and swallows them head first.

The entire time this is taking place, the monster rasps a word through its throat.

CHILD CHILD CHILD CHILD CHILD CHILD CHILD CHILD

Once it has swallowed Frisk, the monster will run off, away from Quark and Sans.