If its just for her, I don’t really care what content I host for family unless it straight up nazi/gay hate shit. New age “found christian” movies are massive yuck, but innocuous otherwise. She’s gonna consume them regardless of whether you host them or not.
Move it to its own library, make sure to rip in low quality (480p low bitrate) so you’re not spending too much disk space in her, and let it be. It’s not worth driving a rift in the family over.
guyrocket