 In 1974, on "Happy Days", she played the babysitter Mrs. McCarthy in the episode titled "Breaking Up Is Hard to Do".Her final performance came in the 1975 film "Escape to Witch Mountain" in the role of Mrs. Grindley, owner of the orphanage where Tia and Tony are sent after the death of their foster parents.Reta Shaw also appeared in the second season of Barnaby Jones; episode titled, "Death Leap"(09/23/1973).