Grandma Barksdale

Helen's mother, never directly seen but her presence is felt from Erin's wedding onward. Among her children, she was closest to Rita Barksdale and by apparences, favored her over Helen and Amy.

Fanfiction
The character was expanded in numerous fanfics. Kara Wild named her Evelyn in the Driven Wild Universe and made her generally crusty, but loving. Later, Richard Lobinske would create Tess Barksdale in the fanfiction series, Falling Into College.