Something i dont understand about the movie disturbia?

ok well in the movie when Kale is filming Mr. Turner with the club girl in the house, she starts banging on the window and screaming, then a few minutes later she walks out and drives away, not to be seen again, until the end, when Kale is back in Mr Turners house, and he is in the basemnt and picks up what i think is a wig, or her cut off hair and the club girls liscence, ad kale says its the club girl... she never left. this is my favorite movie and ive seen it countless times, but i never understood this. can someone help me out?