If you live in New York, or London, or Hong Kong, you can actually meet people like this. Phony, pretend high-class grifters. They are sociopaths.
It reminded meof this guy: https://en.wikipedia.org/wiki/David_Hampton
And they did make a movie: https://en.m.wikipedia.org/wiki/Six_Degrees_of_Separation_(film)
You would think that with so many grifters around these people would have been wise to her. She must have been good.