I cannot explain why others have had problems with Karen, as all I can say is what I have experienced. First of all, as STP stated, and I agree, she is actually better looking in person than in her films...gorgeous in fact. She has great tits, long legs and is super friendly and accommodating.
I have seen Karen 3 times, twice individually and once with another provider. In all three cases, Karen was on time, a lot of fun, great to talk and play with...and, most of all an incredible provider. Those that say she just laid there or seemed to not put in the effort, either saw a different person, or have other problems with either Karen or providers in general.
In summary, Karen is more than worth her fees, is incredibly sexy, very fun, talented and the consummate provider. I even had the pleasure of going to dinner with her and the other escort after my double session and she is the perfect date in public also. Educated, classy and quite the head turner. If you have the opportunity to book Karen, I say do it...if you are a gentleman, you will be rewarded with a spectacular time!!!