Krankor ..
According to Abrams, whom reviewed the pictures personally, it's logical to assume there was only, at most a 7 minute window. This is because of the picture of the woman smiling does NOT comport with the description of the event. She was within minutes of death, she was fighting for her life and she ran out of there and left her shoe, purse, money and the fingernails she lost fighting off her attackers.
The window HAS to be AFTER the SMILE.
Thanks
Watch a movie sometime, then stop it in midframe. The "expression" caught at that particular instant, might look a lot different than the expression that was actually being conveyed- or at least, that's what the prosecution might argue. Or, they could argue she was drugged and didn't know what was going on- then again, how is she able to remember what happened and identify her assailants? It's complicated.