She has a severe facial tic , which usually appears when Billy is misbehaving , when her authority is challenged , or whenever Grim is present , and has also developed nervous breakdowns .
In multiple instances , Gladys is seen attacking Grim to protect her son .
Gladys has a severe facial tic , which usually appears when Billy is misbehaving , when Gladys ' authority is challenged , or whenever Grim is present , and has also developed nervous breakdowns .
In multiple instances , Gladys is seen attacking Grim to protect her son .