I heard about that years ago. Do you know what it was all about?
I believe that the interview mentioned in this article touched briefly on it. Joan had plenty to say, Olivia not so much. It seemed like Joan may have gotten jealous when Olivia started having success at acting.
I checked and at the bottom of the article the feed to the interview works. By the way, the interview was quite refreshing and you could tell the interviewer got a kick out of Olivia. Those pictures amaze me. She does not look 94!
Apparently, just plain ole sibling rivalry - Olivia’s mother preferred her over Joan. I met Joan about ten years ago - very gracious like a lot of the old studio stars.