When Sam goes to see Alice at dinner her right eye is bleeding, but when she goes to the bathroom to look at it, her left eye is bleeding. Then for the remainder of the movie, it's her right eye.
(at around 1 hour and 5 mins) When Sam visits Nicki, her left eye is white. When she sees Alice a few minutes later the left iris is red. When she applies makeup a few minutes after that, her left eye is white again.