I hope this was supposed to be a comedy movie, because if it was supposed to be anything else, it failed. I feel like this would have been a good movie if it didn't turn into a gorey fetishist's comedy about halfway through.
It had a good start and felt like the plot had some depth, but it started to go downhill from the moment she was given the option to terminate but chose not to, despite her horrible state. Then, it became nothing more than obnoxious shots on butts, needles, and gore and drawn out scenes. It should have just shown Sue falling apart instead of the whole monstrosity scene.
Don't go into this movie expecting something serious, you'll only end up disappointed and disgusted.