ATTENTION!
On Friday, the 18th of April, those who had to be near Erin would notice she is irritable, snarly, and more introverted than usual. Those in classes with her --
--- would find the temperature around here was positively FRIGID. More than likely anyone who had to sit near her would be insanely cold during class, and wishing they brought a sweater. If anyone asked her to turn the ice-factor down, she'd ignore them, or just glare.
During lunch, a student cut in front of her on the line to pay and she used a pinkie and some raw force to throw him five feet away from the line, probably into a table.