Donna invited her back
Fay Bainter (December 7, 1893 – April 16, 1968).
Fay Okell Bainter was an American film and stage actress. She won the Academy Award for Best Supporting Actress for Jezebel (1938) and has a star on the Hollywood Walk of Fame.
She played Donna Reed's mother in the film The Human Comedy (1943). She later was a guest star on The Donna Reed Show in The Baby Buggy (Season 5, Episode 11) playing the part of an elderly baby doctor.