Corrected entry: If O-Ren can hear so well that she senses the Bride crouched outside the door, throws a dart at her, and sends GoGo to check, how come she can't hear the Bride jump down from her hiding place in the ceiling after GoGo returns? (01:09:25 - 01:10:30)
Corrected entry: Something is seriously wrong with Vernita Green's daughter's age. Nikki would have to be younger than BB (Beatrix's daughter) if you consider that Vernita probably got pregnant after trying to kill Beatrix. This would but BB at least 9 months to a year older than Nikki. Now, if BB is 4, then is Nikki 2 or 3 and going to school? Not to mention that she was played by an actress who was 7 or 8 at the time, Nikki's age was handled incorrectly either way.
Correction: The film states when Beatrix arrives in Tokyo, that it has been one year since she came out of the coma. Since Beatrix kills O-ren before Vernita, she kills Vernita over a year after being out of the coma. So it is assumed that Vernita gave birth one to two years after the beating. And so, BB is older than four when she finally meets her.
The last sentence of this correction I think confused the names of the two girls. Vernita's daughter is Nikki, and it is explicitly stated that she is four. The bride's daughter is BB, and while not explicitly stated, the timeline tells us that she is 4 years old, as it has been 4 years since the massacre on the bride's wedding day, and she was pregnant at the time.
Question: If Bill is behind the death O-Ren's parents, did she know? If so why didn't she go after Bill?
Answer: There is nothing in the film that states or even particularly indicates that Bill is somehow behind the deaths of O-Ren's parents. The only explanation we get is that their death was ordered by Yakuza boss Matsumoto, who brought in the thugs that killed her father. There is a semi-popular fan-theory that the man in white (Pretty Riki) is actually a young Bill, but to my knowledge, this was never confirmed by Quentin Tarantino. (In fact, according to the Kill Bill wiki, Tarantino actually denied they were the same person, but I can't find the source for that.) So there's literally no reason for her to go after Bill. As far as she (and the audience) knows, he was uninvolved in their deaths.
Now that the full version of the film has been released, everything you said has been confirmed. Pretty Riki is not Bill.
Correction: The camera never shows how Uma crept in front of the door...she may have made noise that wasn't shown on camera.
And just for discussion purposes, I'll also add that I was under the impression that O-Ren just sensed something wrong. If it was heightened hearing senses, then she arguably would have heard the bride struggling to cling to the ceiling.
jshy7979