I'm pretty sure this was movie from Netflix... but my friend rented so many I'm sure he won't remember. Abusive mother has a few kids but holds a teenage daughter down in the basement. I remember because it was so horrible, mother inserting a hot item into her. It's just killing me because I originally thought the mother was Carolyn from sixteen candles. I searched imdb for her movies and it wasn't any of them. Watched it around '09.
Much thanks!