When Laura enters her studio above the empty warehouse, she is wearing red high-heeled shoes. When she runs in terror through the warehouse, she is wearing sneakers, but immediately afterwards, she is once again wearing the high-heeled shoes.
When Laura sees an especially frightening vision the camera cuts to her eyes in close-up. Her pupils are not maximally dilated as they would normally be by extreme emotion, but are pinpoints. This would likely have been a technical difficulty as the bright lights in the C/U would shrink her pupils.