TMI Time - Static Electricity

Abby the Lab here.  Mom has a nice office at at home, where she writes her books and her blogs at night.  But it also has low humidity, Mom being worried about a humidifier leaking on the hardwood floors. Now add in fuzzy slippers, said low humidity, and skin and a metal filing cabinet. Sometimes Mom gets the occasional light shock after shuffling along the big area rug to touch the light switch.