Retcon[]
It should be noted that Aunt Minerva was retconned into Bewitched lore. Although she was never seen or even mentioned in the original Bewitched series, when Gladys Kravitz appears in Season 1, Episode 7 "Arrival of Nancy" of the Tabitha series, Gladys recognizes Minerva, who remarks that it's been a long time since they've seen each other, to which Gladys dryly remarks, "Not long enough."