She would go on to have a thirty - year career as a character actor appearing in a number of movies and television shows .
Gertrude W. Hoffmann 's first Hollywood role was playing Mattie in Before Dawn that premiered on August 4 , 1933 .
Gertrude W. Hoffmann would go on to have a thirty - year career as a character actor appearing in a number of movies and television shows .
Gertrude W. Hoffmann 's first Hollywood role was playing Mattie in Before Dawn that premiered on August 4 , 1933 .