She needs to be properly degraded. The dude should have gotten up as he's about to cum and sprayed it all over her face and hair. It's the only way she'll ever make it in the industry.
The only real way to know how long she's been at it is by her age and demeanour. This bitch is more clinical than a nurse. I'd be suprised if she's in the industry more than a year because given her lack of enthusiasm, she's be long gone in any of the whorehouses I frequent.
He's obviously a total noob. That whore didn't earn her pay and she knows it. A real man would do just that, strip her naked an at least taste that pussy and mouth.