2 pages and no one has stated the obvious.
She was unimpressed with your cock or shagging abilities. Repeat business shouldn't be a problem.
Most likely is just the age barrier for a young American woman. Its not that common here.
You want a chick that age for girlfriend/ or for keeps? Dont bother w/ American girls.
Most of the world over, a 40yr old guy and a 20ish gal is not unusual.
The USA is the small exception, not the all powerfull standard.