I know the list that is linked here is not correct (says she was in all 138 along with Don Adams), since she was not in episode 8 I just saw on my DVD.

https://www.imdb.com/title/tt0058805

IMDB lists her in every episode since she gets a starring credit in every episode of the series. If you look at the detailed list it has a "credited only" note under some of them. It looks like just a handful of absences.