I was intrigued by the idea of the movie at first but the further it got, the worse it got. In the end it is revealed that Grace is traumatized and therefore "of course" becomes an insane killer. I am genuinely angry that mental illnesses like schizophrenia and DID keep getting portrayed like something that makes a person dangerous. This kind of "person ends up hurting others"-stuff happens extremely rarely and people who suffer from these mental conditions will probably feel extremely uncomfortable about discussing them because WELL MOVIES LIKE THIS. Using mental illnesses and the incredibly misinformed stereotypes surrounding them as a way to make money is just plain stupid, especially when a movie where these would be corrected would most likely create a much better, well, movie.
Also, the movie made it look like she was able to control her transformations, which is ridiculous, it's not like an on/off-switch you press. It happens through triggers. And she seemed to be able to hide the other personality of hers which, once again is completely unrealistic.
The ending was confusing and the point where she walks out of the hospital is in my opinion completely unnecessary. I doubt anyone liked that part simply because it was such an obvious "mysterious ending oooo". I would have been a lot less disappointed if the movie had ended when they met each other at the hospital -- at least that would've indicated that Grace got help for her untreated illness.
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