Mommy Dead and Dearest
Starring Gypsy Rose Blanchard, Dee Dee Blanchard, Rod Blanchard, Kristy Blanchard, Jim Arnott, David Blanchard, Michelle Dean, Marc Feldman, Bernard Flatersten, Nicholas Godejohn
It's a crime and documentary movie, and has a rating of 7.3 out of 10 from Imdb which is usually fine for this kind of movie.
Watch it here
Not found streaming from Belgium.