Possible scenario-
After the "insult" about the broomstick, Kim decides to call it a night, and goes to the bathroom with AV. She(they) are trying to get AV a ride to come pick her up but since they were supposed to be there for 2 hours, could not reach AV's ride. Kim finally get fed up and goes out to car. AV follows shortly after, after "trying to make more money;" but no one is interested. The players finally get AV out of house, and when she gets to the car, Kim realizes that AV does not have the things she arrived with. AV goes back to get her "belongings" without Kim but no one will let her in as the back door is locked. AV falls down steps and passes out for several minutes. Guys come up to Kim's car when they realize AV will not leave, tell Kim they have had enough, they help AV to car. At that point, no ride has shown up for AV, and Kim (who has a nasty streak) lashes out at the players, who lash back with the "Thank your grandpa for my cotton shirt;" overheard by the neighbor.
Kim is now stuck with AV and is pissed off, and calls the cops on the Duke players regarding the "racial comment." She tries to call the escort agency a few more times, to see if they can reach passed out AV's ride with no success, after waiting a while and then dumps her off at the supermarket, claiming she saw her on the street, and "helped her," big hero that she is.
Little did she know, or care, that the AV would be taken to the Access Center, try to get out of there by claiming her kids needed to be checked up on and then when that did not get her out of her mess, claimed she had been raped, when the Access Center staff asked directly, figuring that would keep her out of overnight lock-up.
AV later tried to get out of her story to get her out of the Access Center, by making up multiple stories, failing to identify anyone, probably believing police/DA would drop it. (As happened in past when she made false accusations.) I think she has used every tool available to her in the past to get out of trouble and this was certainly not her second brush with the law.
Unfortunately for her, the DA jumped on this nonsense, and hounded her, possibly threatening her with charges for making false statements, possibly notify DHS of her lifestyle, etc.. After Nifong was only half listening to her at that point any way- condoms, DNA, 3,5, 20 players, etc.. The media whirled this into a frenzy, and AV took off with her kids, to avoid dealing with this whole thing, as she does so well.
Most DAs I know will check out the veracity of the AV as well as the accused as they do not want to end up with egg on their face. Since Nifong has his own agenda,and did not care if she was telling the truth, with local endorsement, he ran with it. What a fiasco.
The police dept and DA's office is soooo dirty, who the heck knows. One lies and the other swears to it.