Heather Teague. She was dragged into the woods from a riverbank. The abduction was witnessed from across the river by a man using a telescope.

"Children should be seen and not heard"
Glasses slamming down on a glass table, and glass cutting boards. (My mom married an alcoholic.)
That sound of the metal chalk holder meeting the chalkboard momentarily. Also when the chalk was getting low and there was the building up of anxiety not knowing when you would hear that screech.