Betty Johnson

Betty Johnson was a registered nurse & the grandmother of Cherie Johnson she was portrayed in the original series by the late Susie Garrett.

Pre Original Series
Betty is tasked with raising Cherie after her parents Betty's son Ronald & his wife Elizabeth were killed in a car accident in 1981 & is a nurse.

Original Series
Betty along with Cherie lives in the same apartment complex in which Henry Warnimont lives at & manages, when Punky Brewster started to live there after Henry began to foster to her. She would not only give Cherie advice but also advice to Punky acting like a mother to her in place of Susan including when Punky started puberty with taking about getting her first bra.

Pre Reboot Series
Sometime between Wedding Bells for Brandon and the first episode of the reboot, Betty passed away it's unknown how she died.

Reboot Series
Betty is mentioned by Cherie as she does wear her ring on her finger which uses as her engagement ring. Punky tells her that Betty would approve of Cherie marrying Lauren. Cherie says Betty would have some words but Punky tells her she would have been ok with Cherie marrying Lauren if she realized how happy she is. Cherie wishes her grandma could have been alive to see it as she would have been the one on the dancing floor.

It's Punky Brewster
Even though Betty is mentioned she does appear in some episodes of the cartoon she doesn't speak but is mainly a background character.