I remember being told many years ago by a debauched, older colleague, who would have shagged a barber's floor if it had hair on it, that if you took care of the woman she would take care of you. So it is, I have found. I tell all the lovely sluts who agree to be shagged by me, "Your pleasure is my pleasure" and it is true, even though it sounds a bit sickly as an expression. So long as you take care of the little sluts first before using them for your own pleasure then,, regardless of their age from nubile teens to voracious MILFs to depraved GILFs, they more than take care of you.
No doubt she is a delicious, sex slave but, if he had bothered to lubricate her properly, she would not have had the pain of penetration. Fuck the filthy slut ruthlessly by all means but do not cause the slut pain.