Betty B. Hart is Jenny's mother and the grandmother of Violet. She tends to bicker with her daughter Jenny but still cares for her. She is voiced by Maya Rudolph.
"Miracle on Culpepper Slims Boulevard" shows Betty's middle initial as B. on a piece of mail that she receives.
Betty is a fiery, spunky lady. She tends to have sass in her interactions with everyone around her. Even with these things, she does have a heart for the ones close to her.