She's angry

Miss Nolan pulls herself to her feet, kicking off her remaining shoe and standing there bare foot in the mud for a second, glaring down at Simon as the wet mud drips off her body and clothing. "Get up right now!" She demands.

Simon, looking both embarrassed and scared at the rage in his teachers eyes slowly and carefully pulls himself to his feet, slipping on the wet mud a couple more times before finally reaching a vertical position.

"My office, right now!" Miss Nolan demands, reaching out and grabbing Simon's collar, dragging him behind her as she walks through the mud, the eyes of several students on the pair of them.