In the Dark and the Wet

At first, Ida thought the child was crying, slouched on her knees in the road, covered by an oversized raincoat.  He could see her shoulders shuddering, gleaming wet in the streetlamp's glow.  There was a dark lump on the road before her, visible as a gap in the yellow lines.  Had someone run over her dog?

He slowed when he heard her chanting.

When he saw her hands rise to her mouth, he stopped.  With a grunt and a tearing sound, she began to chew.

By the time he realized it wasn't a raincoat at all, it was too late.