That's a pretty expensive night's stay for the lady! I think it was a lot easier for her to get a hotel room than to get fucked by two big niggers. She's an extremist, though! I can only think of two possibilities. The first is that the lady is a nymphomaniac and she got to her favorite pastime under plausible pretexts. The second option is that the lady is hired and works for money. I can reasonably assume that if the lady does not fit into these categories, then she's unlikely to willingly set herself up with two black dicks.
The girls were having so much fun that it probably couldn't have been improved. But they managed, the lesbian threesome turned into a gangbang.