The movie about the Flint Water crisis was a "passion project" movie for Cher who dropped out due to concerns for her mother. Cher's mother Georgia is not deathly ill but is fragile now that she is in her 90s. Cher did not want to leave Los Angeles and her mother for filming . The news was sudden to producers who were just talking about Cher and the project just days ago. Cher was also set to executive produce the movie. Whether she will remain in that role is unclear.
Here's Cher's visit to Flint