Women Talking is distributed by United Artists, an incredible company founded in 1919 by Mary Pickford, Charlie Chaplin, Douglas Fairbanks, and D.W. Griffith, all of whom wanted more control over the art they were producing. Over 100 years later, the company is still going strong. In 1981, United Artists merged with MGM to form MGM/UA thus giving MGM a little prestigious bump.
Per Indiewire, in May 2021, Amazon "was in talks to buy MGM and its massive library of 4,000 movies and 17,000 episodes of television." That deal went through and now MGM/UA is under the Amazon banner. Given that, it stands to reason that when Women Talking does become available to stream, it will end up on Prime Video.