Reading that scenario got me thinking. What if...Crystal was late because she had an earlier party where she made a fair amount of money doing one-on-ones and when she arrived she told Kim about the earlier event.
True to form, Kim immediately saw $$$ and knew that Crystal probably had at least some of that money still on her. What if Kim drugged Crystal as part of a plan to steal the money? Soon after they started dancing Kim pretended to be insulted because she knew Crystal couldn't keep dancing and she wanted to get out of there.
Kim's plan was to somehow get her hands on the money and either leave Crystal at the house or dump her somewhere.
That could be very well have happened. Roberts would throw her Grandma under a train for $$$.
Crystal did initially claim to have a lot of money, AND to show the mindset and environment these strippers live it ...
I read last night where Roberts thought THAT night that Crystal was "hustling" her in order to keep the larger amount of money from the Duke kids.
You may be on to something there..