The large puddle of blood on the kitchen floor surrounding Ryan's dead body that Sara slips on and falls into causing it to smear and splatter is completely intact as Hollander is preparing to cover the body with a blanket.
Despite during the film references to 29 diamonds and 'where are the other 28' at the end of the film when Sara is pouring the diamonds into the ice tray and spreading them out there are around 40 of them.
Chad cleans most of the blood from Sara's left knee. After she yells at him and he stands behind her, her left knee has the same amount of blood on it as it had before Chad cleaned it.
Blood in large quantities has a strong metallic odor. The blind have heightened senses, so Sara would have noticed the smell of such a large pool of blood long before she stepped in it. Similarly, she would be able to detect the scent of an intruder, especially due to how close he was to her. She later said she smelled the men that were in her apartment.
When the photo with the money hidden in it is pulled off the wall you can see a light focused on it go out as soon as it's removed.