With a history of severe allergies, all she wants is to wear her respiratory mask around campus when she isn't in her air-filtered room. The administration (acting on the assumption that the children are fueled by ghost stories) feels that the mask might spook students and cause a disruption in the school. Here we have an employee who actually wants to teach, but the county would rather pay for a sub while she is on sick leave. As long as she isn't carrying around a bloody machete as well, what's the problem here?