You answer, "I don't know but we need to go find her. It's almost dinner time and she can't be late for dinner!"
So you and Dave walk down the dark hallway. You walk your way through cobwebs and rats until you get to the end of the hallway.
Dave says, "Stop". "For what," you say. "Do you hear that?"
You begin to hear Barbara's voice yelling from the ground.
You say yeah and kneel down to the ground and put your ear on the floor to see if the sounds are coming from beneath you.
Suddenly a big gust of wind flows over your head. When you turn around Dave's gone.