Overall I enjoyed this movie. However, the plot twist didn't hold up. SPOILERS AHEAD
I think the whole twist was it was her SISTER who was blind, not her. Then she took on her sisters blind persona after the massacre of her family. The biggest reason the reveal at the end didn't work for me was because of the scene where she drops the poison, if she had actually been able to see, she would have picked it up and used it immediately rather than give up her opportunity to kill him. I also don't like that we never find out what was really on the USB when it was a fairly big part of the storyline. The quality of the film and the acting was good but the storyline itself needed some tweaking.
I think the whole twist was it was her SISTER who was blind, not her. Then she took on her sisters blind persona after the massacre of her family. The biggest reason the reveal at the end didn't work for me was because of the scene where she drops the poison, if she had actually been able to see, she would have picked it up and used it immediately rather than give up her opportunity to kill him. I also don't like that we never find out what was really on the USB when it was a fairly big part of the storyline. The quality of the film and the acting was good but the storyline itself needed some tweaking.