Interesting thing about that 12" dong that he used on the girl. The guy went to the grey cabinet to the left of the kitchen table (by the windows if you're looking at Camera 1) and reached into the top shelf and pulled out the dildo. Samantha and the couple returned to the apartment a little after 5 am and the guy did not put the dildo there. How did he know there was a dildo there?
Meanwhile, you had Angie and Samantha in the hallway by the door listening to the guests having sex and giggling like two high school girls. Pretty pathetic.
She was in the apartment with another dude from about 6:30 to 8 pm, then they left; they returned a little before 10 pm, then left again. This group showed up a little before 2:00 am.
Edit: She changed her clothes in front of him in the bedroom, for what that's worth.