I'll start with the negatives first and end on a positive note.
In the first few paragraphs I think you used the term eyes searched wildly or something similar at least three times. The scene is frantic and that's well conveyed, but try to find some different ways of conveying it. Also, one moment the girl seems paralyzed, the next she's thrashing wildly. I know that we kind of find out about that later on, but it still seems that she goes from paralyzed to crazy to paralyzed to moving without feeling it rather quickly.
There's some passive voice. An example is The skinny man, with large aviator glasses, was trying to stare at her. Instead of was trying, it should be tried. Passive voice slows down the action, pulls the reader out, and in my opinion is insidious. Even after several readthroughs, I still find examples in my own work. Just something to try to avoid.
Also, it's a personal preference thing, but I prefer using italics instead of underlining. I know back in the day it used to be underlining, but my experience has been that this rule at least has been relaxed, if not outright changed. Again, your preference.
Now, to the positives. I liked the prologue. The beginning seemed frantic, panicky, and made me, the reader feel that way. It was a little cliched after she wakes up and goes after the two men. But that didn't bother me because I was still trying to figure out what was going on.
When you switched POV's I was thrown for a moment. But there was some good writing in there. I especially liked the part about the bottle. It gave a lot of character insight in a short span and pulled me back in. The two characters meeting was well done. I liked the fact that he saw her as being menacing, scary and she sees herself as a vulnerable girl who has been violated.
I especially liked this description: It looked more like a black tube sock filled with pig guts and entrails. That was awesome, lol.
All in all, for a first attempt I thought it was rather well done. There's room for improvement in the stucture of the writing, but that will come with time. I liked it. Now you've set the bar high, I'm eager to see the next chapter and see if you can keep it up.